33. Why is Li Ming so late?　 I don't know ______.　　

A. can what the reason be　　　　　　 B. what the reason can be　　

C. the reason what can be　 　　　　 　D. what can the reason be

32. What we have seen is different from _______.

A. we heard　　 　　　　　　　　　　 B. we have heard 　

C. what we heard　　　　　　　　 D. what we have heard

31. I want to buy some stamps. Can you tell me _____ near here ?

A. if there's a post office　　　　　　　　　　 B. is there a post office

C. where is the post office　　　　　　 D. whether is there a post office

30. Would you please tell me ______ to the railway station ?

A. how far is it　　　 B. how far it is C. how far off is it　　 D. how long it is

29. Now we can see _____ problem the population is .

A. a what serious　　　　　　　　　　　　 B. such serious a　　

C. how serious a　　　　　　　　　　　　　 D. so a serious

28. You have no idea_______ for her safety.　　　

A. how anxious I have been　　　　　 B. so anxious I have been

C. how I have been anxious 　　　　 D. I have been so anxious

27. I am not quite sure ____ he will come or not ?

A. when　　　　 B. what time　　　　　 C. weather 　　　　　 D. whether

26. It depends on ______ we have enough time.

　　 A. if　 　　 B. weather 　　 　C. if or not 　　　　　　　　 　D. whether

25. We have plenty of books here. You may take _____ you like most.

A. in which　　　　　 B. from which　　　　　　　 C. whichever　　　　 D. that

24. I didn't know what _____.　

A. was the matter　　 B. is the matter　 C. matter was　 D. the matter is