In 1492, Columbus_______ on one of the Bahama Islands, but he mistook it for an island of Indi

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• 1Experience of this kind ________ in both the U.S. and Europe well before the Second World War.

  A.have conducted

  B.have been conducted

  C.had conducted

  D.had been conducted

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• 2----Is this the first time you ________ to Harbin? ---- No, but the first time I ____ here, the city wasn't so beautiful.

  A.visited; came

  B.visited; have come

  C.have visited; have come

  D.have come; came

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• 3The palace caught fire three times in the last century and little of the original building ____ now.

  A.remains

  B.is remained

  C.is remaining

  D.has been remained

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• 4— Hi! John, would you like to play football with us? — Oh，I can't. I _________ my lesson all the morning and still need half an hour.

  A.am reviewing

  B.have been reviewing

  C.have reviewed

  D.reviewed

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• 5So hot a day! I would buy one softdrink can, but I ________ money on me.

  A.didn't have

  B.don't have

  C.hadn't had

  D.won't have

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• 6Three months ________ before we knew it.

  A.passed by

  B.went

  C.went by

  D.past

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• 7In the last few years thousands of films ________ all over the word.

  A.have produced

  B.have been produced

  C.are producing

  D.are being produced

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• 8It is the most instructive lecture that ________since I came to this school. 　　

  A.attended

  B.had attended

  C.am attending

  D.have attended

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• 9—You've made great progress in your English study, haven't you? —Yes, but much ________ .

  A.remains to do

  B.is remained to do

  C.remains to be done

  D.is remained to be done

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• 10—I felt it very difficult to carry on the work all by myself. —I could have helped you, but you __________me to.

  A.hadn't asked

  B.didn't ask

  C.haven't asked

  D.don't ask

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