33. It was announced that only when the fire was under control ________ to return to their homes.

A. the residents would be permitted　　　　　　 B. had the residents been permitted

C. would the residents be permitted　　　 　　　　　 D. the residents had been permitted

32. ---- Did you come to the museum by bike yesterday?

　 ---- No. Two meters of snow fell during the night. As a result, several main roads 　__　 .

A. would be blocked　 B. had been blocked　 C. has been blocked　 D. were blocked

31. ----Jack, can you make a sentence to ________ the meaning of the new phrase?

　 ----Well…

A. show off　　　　　　　　　　 B. turn out　　　 　　　　　　　 C. bring out　　　　　　　　　 D. take in

30. My sister met him at the Grand Theatre yesterday afternoon, so he _______ your lecture.

A. couldn't attend　　　 　　　　　　　　　　　 B. mustn’t have attended

C. shouldn't attend　　 　　　　　 　　　　D. couldn’t have attended

29. China’s new food law provides for a food recall system _______ producers have to stop production if their food isn’t up to standards.

　 A. where　　 　　　　　　　 B. that　　 　　　　　　　　 C. when　　　 　　　　　　 D. which

28. Can you imagine that rats eat 40 to 50 times _______.

　 A. by weight　　 B. their weight　　 C. in weight　　 D. of their weight

27. How long do you think _______ the computer company turns out a new product?

A. it will be that 　　 B. will it be until　　 　　 C. will it be since　　 　 D. it will be before

26. ----Hello. May I speak to Bill, please?　

---- ________.　　　　 　　 A. Bill speaking　　　　　B. I’m Bill　　 C. You are speaking to Bill　　　　　　D. I’m speaking

25. ---- Good morning. How much should I pay for these books ________ to Alabama?

　 ---- Hm, about ten dollars.

　 A. to be sent　　　　　 B. being sent 　　　　 　　C. sent　　 D. having been sent

24. ---- You won't go to Kathy's wedding party, will you?

　 ---- Yes, ________ invited.

　 A. though　　　　　　 B. if　　　　　　　　 C. unless　　　　　 　　　 D. as