The room ________ as a meeting room.

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A．used to being used

B．was used to be used

C．was used to being used

D．used to be used

The stones they carried were used ________ houses and bridges.

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(汕头市2006)

--- Why didn't you go to the party last night?

--- Because I ________.

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Working people ________ the history.

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Children play computer games ________ fun and pleasure.

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I've been at this school ________ last year.

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Please put the book ________ you took it.

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What performance ________ we should give at the party?

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How ________! I've left my wallet at home.

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There are a lot of ________ bikes here.

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