至急！英文の穴埋めの添削をお願いします！
1)You (couldn't) stay on the computer so long, or you'll hurt your eyes.
2)I (may well) thinking of my missing dog.
3)The car broke down, and we (had to get) a taxi.
4)"Must I finish this assignment now?" "No, you (needn't). There's no hurry."
5)I recommended that she (should see) the professor.
6)You (can't have seen) Rika yesterday. She moved to England a week ago.
7)I'm sorry I didn't tell you that the store is closed on Mondays. I (should have told) you before you came all the way here.
8)Most office workers ( ) paid a lot less than lawyers.
1,are 2,get 3,must 4,ought to be 5,should be
→2,get
9)( ) you help me? I have a problem with my car.
1,Can 2,Could 3,May 4,Will 5,Would
→3,May
1～７は()内の穴埋め、８，９は不適切な語句を一つ選択する問題です。
できれば解説や訳を加えていただきたいです。
添削よろしくお願いします。
お礼
ありがとうございました！