John sometimes drops the library. A．in, to B．in, at C．on ,in D．in, on——青夏教育精英家教网——

题目内容

John sometimes drops _____ the library.

A．in, to B．in, at C．on ,in D．in, on

试题答案

1、B

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John sometimes drops _____ the library.

A．in, to B．in, at C．on ,in D．in, on

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