we can not figure out ______ quit a number of insects ,birds ,and animals are dying out .

试卷相关题目

• 1Could I speak to ______ is in charge of International Sales ,please ?

  A.anyone

  B.someone

  C.whoever

  D.no matter who

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• 2People in Chongqing are proud of ______ they have achieved in the past ten years .   

  A.that

  B.which

  C.what

  D.how

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• 3____ he was fired by the company is ______ he didn't work hard.

  A.What; because

  B.Why; because

  C.Why; that

  D.That; because

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• 4This is certainly the case, but ____ it is a mistake or not I don't know.

  A.if

  B.even though

  C.whether

  D.that

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• 5I haven't found my watch yet; in fact, I'm not sure ______ I could have done with it.

  A.where

  B.whether

  C.what

  D.how

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• 6We should do more such exercises in the future, I think, ____ we did yesterday.

  A.as

  B.which

  C.that

  D.than

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• 7May and susan are twins and I can't tell_____is_____.

  A.which ;who

  B.which ;which

  C.who ;whom

  D.whom ;who

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• 8No matter how frequently _____ the works of Beethoven always attract a large number of people.

  A.performing

  B.performed

  C.to be performed

  D.being performed

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• 9_____ he was ill, I was expected to take his place greatly surprised me for I didn't have much working experience.

  A.If

  B.That if

  C.That

  D.If that

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• 10_______ we are sure about is the need to prevent children from being spoiled.

  A.What

  B.Which

  C.Whether

  D.That

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