549. When I was at college , I ___three foreign language but I ___all except a few words of each.

　　 A. spoke; had forgotten　　　　 B. spoke; have forgotten　

　　 C. had spoken; had forgotten　　 D. had spoken; have forgotten　　　

548. ----I’m sorry to keep you waiting.

　　　 ---Oh, not at all. I ___here only a few minutes.

　　 A. have been　　　 B. had been　　 C. was　 D. will be　　　　　

547. --- Can I help you, sir?

　　　 ----Yes, I bought this radio here yesterday, but it _____.

　　 A. didn’t work　 B. won’t work　 C. can’t work　 D. doesn’t work　　

546. ---______my glasses?

　　　 ---Yes, I saw them on your bed a minute ago.

A.　　 Do you see　 B. Had you seen　 C. Would you see　 D. Have you seen

545. Helen ___her keys in the office so he had to wait until her husband ___home.

A.　 has left; comes　 B. left; had come

C. had left; came　 D. had left’ would come　　　　　　　　　　　

544. ---Where ___the recorder?

　　　 ----I can’t see it anywhere. I ___it right here, but now it is gone.

　　 A. did you put; have put　　 B. have you put; put　

C.　 had you put ; was putting　 D. were you putting ; have put　　　　

543. Both my brothers work at the power station that ____in my hometown .

　　　 A. has set up　 B. has been set up　 C. was set up　 D. is set up　　　

542. “ Do you still play basketball?” “Oh, no, I ____it for the past two years”.

　　　 A. haven’t played　 B. didn’t play　 C. have played　 D. played　　　　

541.He ____his leg when he ____in a football match.

　　　 A. broke; played　　　　　　　　　 B. was breaking; was playing　

　　　 C. broke; was playing　　　　　　　 D. was breaking; played　　

540.Hello, I ____you ____in London. How long have you been here?

　　 A. don’t know; were　　　　　　　 B. hadn’t known; are　

　　 C. haven’t known; are　　　　　　　 D. didn’t know; were