题目内容

I’d appreciate it if you could tell me how _____ the machine.(201112)

A. operate
B. to operate
C. operating
D. operated

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I’m sorry to tell you that the materials you wanted are _____(201112)

A. taken off
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C. sold out
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It is obvious that these small businesses are _____ need of technical support.(201112)

A. in
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C. with
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As long as
B. As well as
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A. where
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