A cook will be immediately fired if he is found to smoke in

问题描述:

A cook will be immediately fired if he is found to smoke in the kitchen.
to smoke 用在这里对吗
1个回答 分类:英语 2014-10-08

问题解答:

我来补答
doing 表示正在,而 to do 表示未发生.所以用 doing
 
 
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