isagrowingworldproblem,andnowa

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_________ is a growing world problem, and nowadays the United Nations and its member countries _________hard to deal with it．

A．Desertification; are working	B．Desertified ; worked
C．Desert; work	D．Desertification; have worked

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The prize will go to the writer ________ story shows the most imagination.

A．that

B．which

C．whose

D．what

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The reason _______ he was absent from the meeting is_____ he suffered from a headache.

A．what; because	B．for; that
C．why; that	D．when; because

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Everyone knows that _____ is dangerous to play with fire, but _____ is difficult is to prevent children from playing with fire.

A．it, it	B．what, what
C．it, what	D．what, it

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—I am thinking of the test tomorrow. I am afraid I cannot pass this time.
—_________! I am sure you will make it.

A．Go ahead	B．Good luck
C．No problem	D．Cheer up

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As the clock struck nine, players ______their positions and the match began.

A．stood up	B．took up
C．made up	D．set up

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相关知识点

名词+of 表示数量动词语态

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