题目内容

I'm looking for Paul. _________ him?

A. did you see
B. have you seen
C. had you seen
D. were you see

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Mary __________ for me when I ______

A. was waiting, arrived
B. has been waiting, arrived
C. has waited, arrived
D. was waiting, was arrived

A: __________ to the United States? B: No, never.

A. did you go
B. had you been
C. have you gone
D. have you been

A: How did the accident happen? B: I _______________ too fast and couldn't stop in time.

A. went
B. had gone
C. has gone
D. was going

A: I can't talk to you right now. You can see I'm very busy. B: OK. ____________ back in about half an hour.

A. I'll be
B. I am going to be
C. I will have been
D. I am

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