To understand the complex situation completely requires more thought than ________ so far.

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• 1When Nancy was at college, she ____ three foreign languages, but I am surprised to find that  she ____ all except a few words of each.

  A.spoke; had forgotten

  B.had spoken; had forgotten

  C.spoke; has forgotten

  D.had spoken; has forgotten

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• 2Mr. Lee, who _______ as a carpenter for over 10 years, is now a very famous statesman in this country.

  A.has worked

  B.had worked

  C.worked

  D.works

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• 3Jack could have avoided that terrible car accident, but he ________ careful enough.

  A.is not

  B.hasn't been

  C.was not

  D.hadn't been

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• 4—You may find the key to the math problem on page 107. —Ah, it's so simple. I wonder why I _____ of that.

  A.hadn't thought

  B.haven't thought

  C.didn't think

  D.wasn't thinking

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• 5Using a telescope we could see that something ______ .

  A.is happening

  B.happened

  C.would happen

  D.was happening

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• 6I _________the office yesterday afternoon when a stranger came in with a boy．

  A.left

  B.was about to leave

  C.was to have left

  D.will leave

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• 7——Is this the first time you _______ Qingdao? —— 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 visited, came

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• 8A lot of modern teaching equipment which will improve the school conditions to a large extent _______ to ten Hope Schools in South China．

  A.were sent

  B.was sent

  C.have sent

  D.had been sent

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• 9According to a report, cigarette smoking____ in all indoor public places in China already.

  A.will ban

  B.has banned

  C.will be banned

  D.has been banned

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• 10---I'm sorry, but I don't quite follow you. Did you say you wanted to return on September 20? ---Sorry, I ______ myself clear. We want to return on October 20.

  A.hadn't made

  B.wouldn't make

  C.don't make

  D.haven't made

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