533. – Do you mind if I smoke here?

　 --- ___________.

A. You’d better not　　　　 B. Yes, you can smoke

C. Of course　　　　　　　 D. No, please don’t

532. Not until we got off the bus _____ that his wallet _____.

A.　　　 he found; was stolen

B.　　　 had he found; had stolen

C.　　　 did he find; had been stolen

D.　　 had he found; had been stolen

531. –Do you think the bad weather will __________?

　 --- I _________.

A. go on; don’t hope so　　　　　 B. keep up; hope not

C. take up; think not　　　　　　 D. keep on; don’t think so

530. –Jack fell off a ladder yesterday, but he is all right.

　 --- He is lucky. He _______ himself badly.

A. could wound　　　　　　　 B. could have wounded

C. could hurt　　　　　　　　 D. could have hurt

529. ________is well known, ______Hong Kong returned to China on July 1^st, 1997 .

A. It;　 that　　 B. It; which　 C. As; /　　 D. As; as

528. – Excuse me, but could you tell me the way to 24^th street ?

　 ---__________.

A. Sorry, but I’m a stranger myself　　　 B. OK. It’s not far from here

C. Yes. Go ahead.　　　　　　　　　　 D. Well, you will get there.

527. He must ______ a shower, for I can hear the water ________.

A. have; run　　　　　　 B. be having; run

C. have; running　　　　　 D. be having; running

526. We wrote a letter of thanks to _______ had helped us.

A. who　　 B. whom　　　　 C. whoever　　　 D. whomever

525. – Our guests are arriving from Shanghai at 10: 30 .

　 --- Really? I ______　 it _______ 12:30 .

A. think; is　　　　 B. thought; was　　　

C. have thought; will be　 D. had thought; will be

524. – Shall we go swimming?

　 --- OK. I’ll just go and get ________.

A. to change　　 B. to be changed　　　　 C. changed　　　 D. changing