Many provinces have been hit with smog. If _______ unsolved, the problem may lead to more serious results.

试卷相关题目

• 1 ________ here yesterday，he could have seen Jackie Chan.

  A.If Bob has come　　

  B.If Bob came

  C.If Bob had come　　

  D.If Bob should come

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• 2 “Never for a second，”the boy says，“________ that my father would come to my rescue.”

  A.I doubted

  B.do I doubt

  C.I have doubted

  D.did I doubt

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• 3Sitting under the willow trees ________ an old man.

  A.is

  B.are

  C.is there

  D.are there

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• 4--- How is the man injured in the accident? ---- The doctor said if ________ in a proper way, he was likely to be saved.

  A.treated

  B.treating

  C.is treated

  D.to be treated

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• 5--Did you visited the military museum? --Yes. Not until quite recently ________ any idea what a guided missile was like.

  A.had I have

  B.did I have

  C.I had

  D.I have had

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• 6 At no time________the rules of the game.It was unfair to punish them.

  A.they actually broke

  B.do they actually break

  C.did they actually break

  D.they had actually broken

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• 7Not until I read your letter ________ the true state of the affairs.

  A.did I understand

  B.had I understood

  C.I understood

  D.I had understood

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• 8________ that Marie was able to set up new branches elsewhere.

  A.So successful her business was

  B.So successful was her business

  C.So her business was successful

  D.So was her successful business

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• 9Directly he arrived the bus station, then ________ he had intended to take.

  A.a bus did come

  B.a bus came

  C.came a bus

  D.did a bus come

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• 10_______, they had no chance of winning the war.

  A.As they fought bravely

  B.Bravely though they fought

  C.Brave as they fought

  D.Though they fought brave

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