题目内容

I ________in this school for ten years.

A. has worked
B. am working
C. have worked
D. was working

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. Tom flew to London by ______.

A. he
B. himself
C. herself
D. themselves

Doctor Wilson _______ a pain in his back since last Sunday.

A. have had
B. had have
C. has had
D. has have

I _______English for ten years before I ______ to teach you in 1997.

A. had studied, came
B. have studied, come
C. studied, came
D. have studied, have come

I _______English for ten years before I ______ to teach you in 2006.

A. had studied, came
B. have studied, come
C. studied, came
D. have studied, have come

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