问题

Why not take up some outdoor sports to relax ______ office work? It will also help keep you healthy

A:for
B:from
C:on
D:of

正确答案是：

同类题型

summer rain, the rainbow looks more beautiful ____ a blue sky.

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a very hard-working student—________As far as I know, he often burns the midnight oil

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Have you ever written a letter to yourfriend—Yes, I.