Lesson 15
① 1. 〇 2. 〇 3. 〇
② 1. 〇 2. 〇 3. Spanish (is a language spoken) widely in South America.
③ 〇
Lesson 16
① 1. 〇 2. This is (the book which my mother bought) for me. 3. 〇
② 1. 〇 2. 〇 3. 〇
③ 〇
Lesson 17
① 1. 〇 2. 〇 3. 〇
② 1. 〇 2. 〇 3. (What I watched last night) was Star Wars.
③ 〇
参考にしてください。