题目内容

It ______ five years since he has left for Beijing.

A. was
B. have been
C. is
D. is going to be

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We can’t find him anywhere. Perhaps he ______ home.

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

Could you tell where the railway station ______?

A. was
B. is
C. will be
D. would be

We ______ to the Great Wall several times.

A. go
B. went
C. have gone
D. have been

It seemed that the old man ______ for something over there.

A. looks
B. looked
C. was looking
D. has looked

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