Experiments of this kind ___in both the U．S and Europe well before the Second World War

试卷相关题目

• 1This is the second time that you ______ the Summer Palace.

  A.visited

  B.have visited

  C.had visited

  D.are visiting

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• 2I will go to the seaside for a holiday with my family as soon as I ______ what I am doing.

  A.would finish

  B.have finished

  C.finishing

  D.finish

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• 3— Beijing is well worth visiting. I _____ there with my parents during the holidays. — I agree. I have been there twice.

  A.went

  B.have gone

  C.have been

  D.would go

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• 4--- Nancy, can I take a look at the note you took for last period, please? --- I'm sorry, I __________ something else then. I'll make it up right away.

  A.did

  B.was doing

  C.had done

  D.have done

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• 5----I wonder what makes you a successful manager. ----I ______ as a waiter for five years, which contributes a lot to my today's work.

  A.serve

  B.have served

  C.had served

  D.served

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• 6—We all had a lot of fun at the barbecue yesterday. Pity you weren't there. — I really should have gone with you, but I ________ on some remaining problems.

  A.was working

  B.would work

  C.worked

  D.had worked

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