Air pollution, together with littering, ____ many problems in our large industrial cities today.

试卷相关题目

• 1It is time for class. Will you please get the blackboard__________?

  A.to clean

  B.cleaning

  C.cleaned

  D.having cleaned

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• 2______ of danger in the street last night, she had to go home, with a friend following her.

  A.To be warned

  B.Warned

  C.Having warned

  D.Warning

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• 3This is the best way _____ the river from _____ .

  A.to prevent; being polluted

  B.preventing; polluting

  C.preventing; being polluted

  D.to prevent; polluting

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• 4She is said _____in the United States for four years before she came back to work in our company.

  A.to study

  B.to be studying

  C.to have studied

  D.studying

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• 5Please excuse me for ______ in without ______．

  A.coming ,asking

  B.coming ,being asked

  C.to come ,asking

  D.to come ,being asked

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• 6_____ extremely exhausted, I turned to look at the puppy that _____ at the door.

  A.Felt ,lied

  B.Feeling ,lay

  C.Fell ,lied

  D.To feel ,lain

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• 7The brave soldier, ________, jumped into the cold river to save the girl who wanted to kill herself.

  A.risked drowning

  B.risking drowning

  C.risked being drowned

  D.risking to be drowning

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• 8I heard it was going to become cloudy this afternoon, _______ by a storm.

  A.following

  B.followed

  C.follow

  D.to follow

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• 9A fire broke out in a commercial mall unexpectedly ________ the customers and the persons working there fleeing for safety

  A.making

  B.causing

  C.forcing

  D.sending

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• 10Because of air pollution being greatly reduced, this city is still ______.

  A.a good place which to be lived in

  B.lived as a good place

  C.a good place to live in

  D.living in as a good place

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