________ the fresh air in, all the windows must be kept open.

试卷相关题目

• 1Have you ________ the book you have been looking for?

  A.found

  B.found out

  C.find

  D.discovered

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• 2Today she ________ a red coat.

  A.is dressed in

  B.were wearing

  C.is having on

  D.is putting on

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• 3This dictionary is ________ for middle-school students.

  A.intended

  B.existed

  C.required

  D.taken

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• 4Smokers ________the government a lot of money.

  A.took

  B.cost

  C.spent

  D.paid

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• 5One should be able to ______ a lesson from experience．

  A.learn

  B.have

  C.teach

  D.give

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• 6Paul hurried home, changed into old clothes, ________ in the study for 2 hours.

  A.and worked

  B.to work

  C.working

  D.and working

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• 7I don't think that five hundred pounds ______ a big sum for a rich man like you．

  A.are

  B.is

  C.were

  D.is to be

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• 8Flood rarely ______ in this part of the country．

  A.attacks

  B.occurs

  C.breaks

  D.damages

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• 9My teacher ________ my plan.

  A.agreed

  B.agreed with

  C.agreed in

  D.agreed to

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