A lock locking a door. A. is used to B.used to C. is used for D. is used into 题目和参考答案——青夏教育精英家教网—

题目内容

A lock ___ locking a door.

A. is used to B.used to C. is used for D. is used into

解析:

这里选is used for 意思是：被用来作…..

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