31. The teacher _________(not teach)us a Chinese song，he ________(teach)us an English song two days ago.

30. Listen! Who _________(sing)in the next room?

29. If it __________ (rain) this morning, we won't go shopping.

28. Where __________ they __________ (live)? They __________ (live) in Shanghai.

27. __________ it __________ (snow) outside now? -No, it __________.

26. I __________ (make) a lot of mistakes in my test yesterday.

25. If it snows tomorrow, we __________ (play) with snow.

24. I __________ (visit) my friend next Sunday.

23. He __________ (join) the army in 1985. He __________ (be) still in the army how.

22. It's seven in the evening, Tom's family __________ (watch) TV.