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A lock locking a door.A.is used toB.used toC.is used forD.is used into

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A lock locking a door.A.is used toB.used toC.is used forD.is used into

A lock ___ locking a door.

A.is used to

B.used to

C.is used for

D.is used into

试题答案

C

这里选is used for 意思是:被用来作…..