5 次の文を,仮定法を使った文に書きかえなさい。 口(1) As Iwas not there, my son cried. Son 口(2) He did not hurry, so he could not càtch the bus. If I had been there, my sen would not cried. If he had he could counfht the bus. (3) As l anm not as young as you, I cannot go skiing with you. 口(4) As it is rainy today, I will stay home. 口(5) He was sick in bed, so he could not go hiking. 口(6) I'm sorry I can't attend the meeting. 口(7) I'm sorry I couldn't see your parents at the restaurant.