—These farmers have been to the United States.—Really?When there?[

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—These farmers have been to the United States.
—Really?When          there?[     ]
A. will they go
B. did they go
C. do they go
D. have they gone

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举一反三

—Have you seen the exciting film "Impossible Mission Ⅲ" ?
—Yes. I it at home yesterday evening.[ ]
A. see
B. have seen
C. saw
D. seeing

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Michael____to swim in West Lake yesterday. [ ]
A. see
B. was seeing
C. was seen

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I   __ believe him __     I saw what happened with my own eyes.   [     ]
A. won"t, unless
B. will, if
C. didn"t, until

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It has been three years since we_____at the meeting.    [     ]
A. have met
B. met
C. meet

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—The film         when I          to the cinema.
—That"s too bad!            [     ]
A. began, got
B. had begun, had got
C. had begun, got

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