内容正文:
1. --- Oh, dear. I forgot the air tickets.
--- You ______ something.
A. have left B. are always leaving C. are leaving D. always left
2. --- I ______ so busily recently that I ______ no time to help you with your math.
--- That’s OK. I can manage it by myself.
A. have been working; have B. have worked; had
C. am working; will have D. had been working; had had
4. I first met Tom 10 years ago. He ______ in a radio factory at that time.
A. had worked B. has worked C. was working D. has been working
5. --- What ______ when I phoned you?
--- I ______ my work, and I wanted to go out.
A. have you done; finished B. were you doing; have finished
C. did you do; had just finished D. were you doing; had just finished
6. --- Have you finished the report? --- No. I ______ it all this week.
A. will do B. had done C. have done D. have been doing
7. --- Why? Tom, your shirt is so dirty!
--- Mum, I ______ my storeroom downstairs.
A. cleaned B. have cleaned C. was clea