Some kinds of animals can _______ the colour of their surroundings.

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• 1We arrived at work in the morning and found that somebody ________ into the office during the night.(2011·江西)

  A.broke

  B.had broken

  C.has broken

  D.was breaking

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• 2I ____ along the street looking for a place to park when the accident ____.

  A.went; was occurring

  B.went; occurred

  C.was going; occurred

  D.was going; had occurred

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• 3— You wear a sad look on your face. What's wrong, Linda? — Oh, nothing much. I _____ of my friends back home actually.

  A.just thought

  B.have just been thinking

  C.was just thinking

  D.have just thought

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• 4—Did you listen to the report last Friday? —Yes, it was about the shortage of immigrant workers. That was the first time I ________ about the subject.

  A.have heard

  B.was hearing

  C.would hear

  D.had heard

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• 5— You were out when I dropped in at your house. — Oh, I ______ for a friend from England at the airport.

  A.was waiting

  B.had waited

  C.am waiting

  D.have waited

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• 6— Has Tom already finished his new story? 一 I have no ide

  A.He _____it last month. A.had written

  B.was writing

  C.would write

  D.wrote

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• 7This time yesterday, the professor _____ an excellent speech.

  A.is making

  B.was making

  C.makes

  D.made

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• 8Millions of people all over China _____ TV when the spaceship returned and landed safely.

  A.are watching

  B.had watched

  C.watch

  D.were watching

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• 9-Why didn't you turn up at the meeting?-I ________ for a longdistance call from my father in England.

  A.waited

  B.had waited

  C.was waiting

  D.have been waiting

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• 10-It was really very kind of you to give me a lift home.  -Oh,don't mention it. I________past your house anyway. 

  A.was coming

  B.will come

  C.had come

  D.have come

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