20. A heavy traffic stopped us from going to school in time.

_______　 _______ the heavy traffic, we were late for school.

19. It’s a long time since we met last.

We haven’t seen each other _______　 ________.

18. Only Jack can speak French in our school.

_________　 ________ Jack can speak French in our school.

17. Most of these questions were not about his lessons.

Most of these questions _______　 _______　 ______　 _______　 _______his lessons.

16.They don’t often hear the twins sing the song in the school.

_________ of the twins ________ often heard _________ sing the song in the school.

15. You must do as I said, or you’ll kick yourself.

　 A.踢你自己　　　 B.恨你自己　　　　 C. 打你自己　　 D. 后悔