问题 选择题

--What about the protection?

---Let’s keep the surface ____ dirty by putting a cover over it.

A.far from

B.free from

C.apart from

D.away from

答案

答案:B

考查短语:keep sth free from 使某物免受什么,句意:这个保护怎么样?让我们使表面免受脏东西通过在上面放一个盖子。所以选B。

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