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LESSON SLEEP - VOCABULARY AND GRAMMAR 1 A Complete the paragraph. Use the words in the box. was asleep get up stayed up late fall asleep went to bed woke me up stayed in bed was awake | worked hard yesterday. Then I (1.) , to study for a test. I finally (2.) เat midnight, but I didn't 12:00 (3.) until 3:00 AM.I (4.) . for three hours. | think was too tired to sleep! I finally (5.) when the alam clock (6.) That was at noon. But 1 (7.) -I didnt (8.) until almost 1:00. B Find the mistake in each sentence. Then rewrite the sentences. 1. Did you went to the movie last night with your friends? 2. Where do you go on vacation iast year? 3. 1remembered my sunglasses, but I didn't remembered my watch. 4. Yesterday I got up early, eat toast for breakfast, and went to school early. 5. What Julio did buy at the bookstore?

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Scientists know that the brain is very active READING AND WRITING 4 Read this article. Understanding Sleep when a person is sleeping. There are foน stages, or parts, of sleep. Stage 1 starts after you fall asleep. If there is a noise or a bright light, you wake up Verน easily. In Stage 2, your brain waves are very slow, and your body gets ready for deep sleep. Stage 3 is deep sleep. It's very difficulk to wake up then. Your body rests and grows 0 during this stage. Stage 4 is when you dream. Your eyes move a lot, and your brain waves are fast. This Brain waves during sleep stage of sleep is very important for your memory. After Stage 4, you wake up a little, and then Stage 1 starts again. We go through the four stages of sleep four or five times every night, so we have many dreams in one night. How much sleep do you need? The answer depends on your age. Babies should sleep 15 to 16 hours every day. Children and teenagers need nine or ten hours of sleep, but older people only need six to eight hours. If you sleep for only four hours one night, yoน may just feel tired the next day. But many nights of bad sleep can be bad for your health. People who don't get enough sleep get sick more often. And sleep is very important for learning. It's one reason why students should go to bed early! 3 Answer the questions. 1. How many stages of sleep are there? 2. When do people dream? 3. How many times do we have Stage 1 sleep each night? 4. When does your body grow? 5. How much sleep do babies need? 6. Why shoนld students sleep a lot? 7. Look at the last paragraph again. How much sleep should you get? 8. Do you get enough sleep? UNIT 6 The mind

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C Complete the conversation with the simple past tense. A: When (1. // be) my family went on vacation. eight years old, B: Where (2. you / go) ? A: Florida! B: (3. you / enjoy) yourself? A: Yes, I did. It was fun! B: How many days (4. you / stay) there? A: (5. we / stay) for three days. (6. we /go) to the beach and in the ocean. (7. we / swim) B: Do you want to go back again? a great time. A: Sure! (8. // have)

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ดบIZ 10 Active and pasรsive (Charts 10-1- 10-3) Directions: Change the sentences to passive f possible. 1. Jonathan was involved in a serious car accident last night. 2. The plumber has finally fixed our sink. . 3. Pedro is going to leave before sunrise. น 4. We rode in a limousine to our wedding. 5. The Tangs stayed at a friend's summer house last month. . 6. Lightning struck one of the cows in the pasture. 7. The board of directors will sell the company next month. 8. The answering machine has recorded the conversation.

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8. hope to get good ค น ภา 1. Did you e. you taking this vear? 1. Thursday afเernoons in the library. 9. pass or fail? 3 Complete the paragraph with the words in the box. Use the simple past. be ปัท) find า finish วๆ get go ปี live want ๆ move When Chang was young, his family (1.) in a small town. When he was eight, they (2.) -to Shanghai, Chang (8.) "2 a good education there. He (4.) to become a computer programmer. He (b.) college when he was 20 years old. Then he (B.) to New York City for a job interview. Chang (7.) very lucky, and he got the job. He also (8.) a cheap apartment, which was also very lucky. Chang invited his parents to visit him, but it was too far for them to travel. 6 Read more about Chang's life. Underline the regular simple past verbs. Circle the irregular ones. For many years, Chang worked very hard. Sometimes he forgot to eat lunch because he had so much Work to do. He rarely slept because he stayed late at the office. He liked his job and he enjoyed going out with friends on the weekend, but he wondered what other jobs he could apply for. He also wanted to visit his family in China, One day, Chang saw a job posting online. A school needed an IT instructor. The school was in Shanghai! Chang did not know what to do. He had a big decision to make.... Lessons Learned

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HN) Exercises (1)You take 200 milligrams of a headache medicine, and after 4 hours, 120 milligrams remain in your system. If the effects of the medicine wear off when less than 80 milligrams remain, when will you need to take a second dose, assuming the anmount of medicine in your system decays exponentially? 13 ส.ค. The half-life of Radium-226 is 1590 years. If a sample initially contains 200 mg. how many milligrams will remain after 1000 years? )The half-life of Fermium-253 is 3 days. If a sample initially contains 100 mg, how many milligrams will remain after 1 week? บ้อ The half-life of Erbium-165 is 10.4 hours. After 24 hours a sample still contains 2 mg. What was the initial mass of the sample, and how much will remain after another 3 days? The half-life of Nobelium-259 is 58 minutes. After 3 hours a sample still contains10 mg. What was the initial mass of the sample, and how much will remain after another 8 hours? (6) A scientist begins with 250 grams of a radioactive substance. After 225 minutes, the sample has decayed to 32 grams. Find the half-life of this substance. A wooden artifact from an archeological dig contains 60 percent of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years.)

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22:32 อ. 27 ก.ค. จe 58% 4 Exercise 6 Complete the following sentences. Write an adjective phrase that includes the preposition in parentheses. The first one has been done for you. 1. Is this the train to Tokyo (to)? 2. They live in a big house (near). 3. Emily's desk is (oppposite), 4. The bucket has a hole (in), 5. Who is the man - (with)? Exercise 4 Complete the following sentences. Write an adjective phrase, using the adjective in parentheses and another adjective linked with and or but. The first one has been done for you. 1. My dog is_small and brown (small), 2. His sister's hair is (black). 3. Our teacher is (oppposite), 4. Tomorrow's weather wilI be (sunny), 5. The museum waS (quiet),

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17:11 จ. 19 ก.ค. @ 53%| เสร็จสิ้น := 2 Pronouns 2 (1 จาก 45) เปิดใน Office Some of the reflexive pronouns in the following sentences are used correctly, but some are not. Put a checkmark in the box if the reflexive pronoun is correct. Put an x x in the box if it is not correct. Then write the correct reflexive pronoun in the blank space. 1. Sometimes wash the dishes all by himself X 2. Dad had an accident. He cut herself with a knife. 3. Sally washes the car by herself| 4. Do you think the doctor can cure itself when he is ill? 5. The cat stays clean by licking itself| 6. Anna and May made the dinner all by herself 7. Mom lets me walk to school by myself| 8. Can you dress themselves , boys and girls? 9. David can swim all by himself| now. 10. This light is automatic. It switches itself on at night. Exercise 3 Write a short sentence using each of the interrogative pronouns below. Who is this man? Example: Wh0 Who Whose What Which Whom 30

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VOCABULARY DEVELOPMENT Word-building (2) 1 Look at the words from Unit 5. Use a dictionary to identify what part of speech each word is. STUDY SKILแL Suffixes Identify the part of speech of a word (verb, noun, adjective, or adverb) to help you understand the meaning and develop your vocabulary, for example: inform (v), information (n) informal (adj), infoirmally (adv) forget greatly invitation international renewable criticism really enjoy 2 Complete the table for each word with one example of each part of speech. Mark the stressed syllable. Use your dictionary to help. Read STUDY SKILL Suffixes give you clues to the part of speech, for example: " -tion, -ism, ment, ity, ness are noun suffixes, for example, invitation " -al, -ful, -able are adjective suffixes, for example, jnternational " -ly is an adverb suffix, for example. formally verb adjective adverb noun think hopefuly pain pleasure critical 3 Read STUDY SKILแ Match meanings 1-10 with prefixes a-j. STUDY SKILแ Prefixes Use the example words in italics to help. a auto- autobiography antiseptic bilingual d micro- microphone misprint f multi- multimedia Adding aprefix changes the meaning of a word. Each prefix has a different meaning and can be found as a separate entry in the dictionary. For example: mis- means wrong or not e.g. misunderstand. bi- means two or twice, e.g. biannual (twice a year). 1 against 2 wrong: not b anti- 3 | small/tiny ( bi- 4 |after | two/twice under 5 e mis- 6 across; change again 9 8 post- postgraduate h re- 7 8 review | by itself/oneself i sub- submarine 10 many j trans- transform 4 Complete definitions 1-10 with an example word from exercise 3. is to change something completely. is a piece of electrical equipment that is used for making sounds and 1 To 2 A voices louder. 3 Someone who is can speak two languages equally welL. 4 A liquid or cream which stops a cut becoming infected is called an 5 A type of ship which can travel underwater is a 6 To your work is to look at it again to make sure you understand. 7 An is the story of a person's life written by that person. 8 A is someone doing further studies at a university after his or her first degree. 9 is using sound, pictures, and film as well as text on a screen. 10 A is a mistake in printing or typing. 32 Unit 5 - Conferences and visits

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PENCIL (2B) B. Complete the text about Niran's day. go Out go listen make Start Work finish Work chat นse the internet A day in Niran's life Niran wakes up at 6.30. He doesn't have breakfast. He takes the ! children to school. He at 8.30 ล.m. โท the afternoon, | he for_his work. Sometimes he with his friends. At 5.00 p.m. he and for dinner. In the evening, he the bed, watches TV and to music. He to bed about 10.00 p.m.