1.-What are you going to do this weekend?　

-I 　　　　yet.　

A.haven’t decided　

B.won’t decide　　

C.have decided

D.didn’t decide　

答案：A　yet用于现在完成时，所以排除B、D两项；yet用于否定句，所以排除C。

30.In the morning of May 2,they left for Beijing.

答案：In→On

我综合我发展　

29.The old man has died since two years ago.　

答案：died→been dead

28.What are the two girls talk about?　

答案：talk→talking

27.I think I’ve gone to there once.　

答案：.gone to→been

26.The woman has come here for a long time.　

答案：come→been

25.People all over of China got to know the good news.

答案：去 掉of　

24.This is very nice of you to say so,Many thanks.　

答案：This→It

23.We have written these reports since nine hours this morning.　

答案：hours→o’clock

22.This long river runs across my village.　

答案：across→through