In the last twenty years, seven Canadian scientists _______ the Nobel prize!

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• 1—Have your read the article A Dirty Beijing, which is about air pollution? —Yes. It's highly informative. I ________no idea that the PM2.5 there sometimes reached 300.

  A.have

  B.had

  C.will have

  D.would have

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• 2--- What on earth is that noise? --- Oh, the next flat ___________.

  A.was decorated

  B.was decorating

  C.is being decorated

  D.is to be decorated

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• 3Put on your coat! I _________ you down to the doctor.

  A.have been taking

  B.am taking

  C.took

  D.have taken

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• 4--- How long _______ in Shanghai? --- For two weeks. I'm going to visit some schools in Shanghai.

  A.did you stay

  B.have you stayed

  C.are you staying

  D.do you stay

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• 5- Why do you look so worried? - My MacBook Pro broke down and my paper______unfinished since.

  A.was left

  B.has left

  C.left

  D.has been left

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• 6--- Has James finished his report on his Enquiry Learning yet? ---- I'm not sure. He _____ on it last week.

  A.was working

  B.has worked

  C.worked

  D.had worked

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• 7My friend, Tom had just lost his job when, at the precise moment, his girlfriend ______ up with him. She was rubbing salt into his wound.

  A.breaks

  B.has broken

  C.had broken

  D.broke

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• 8Father ____ for London on business upon my arrival, so I didn't see him.

  A.has left

  B.left

  C.was leaving

  D.had left

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• 9It was the second time we _____ in holding such important parties.

  A.succeed

  B.had succeeded

  C.succeeded

  D.have succeeded

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• 10The world will be different from what it is now, and we will have to be prepared to _______to the change.

  A.adapt

  B.adopt

  C.apply

  D.devote

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