7. If only he have lain quietly as the doctor instructed, he would not suffer so much now.
_________
8. Yesterday I went to see him, only learn that he had gone abroad two days before.
_________
9. We are swimming in the lake when the storm started.
_________
答案: 1. significant→significantly
2. anyhow→somehow
3.在I后添加am
4. back→ahead
5. arresting→arrested
6. date→dates
7. have→had
8.在only后加to
9. are→were