从A、B、C、D四个选项中，选出与所给句子划线部分意义相同或相近并能代替的那一项.

That player is sliding on the ice.

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从A、B、C、D四个选项中，选出与所给句子划线部分意义相同或相近并能代替的那一项.

Will you exchange seats with me?

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从A、B、C、D四个选项中，选出与所给句子划线部分意义相同或相近并能代替的那一项.

The main thing is not to worry.

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-- What_________ this piece of cloth used for? 

-- It is used for _________ the table clean.

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I noticed him _________ the teachers' office just now.

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Dr. Bethune was busy ________ the wounded soldiers.

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He's seen drawing under the tree over there now, _________he?

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_________ books must be produced for the children.

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A. Many thousands

B. Many thousands of

C. Many thousand of

D. Many thousand

Not only you but also he _________ to go there at once.

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-- Have all the students known that our class will visit the factory this afternoon?

-- Yes. Every student _________ about it.

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