A:When leaving,B:When one is leaving,C:Leaving,D:When one ha

A:When leaving,B:When one is leaving,C:Leaving,D:When one had left
()a car in this car park,the brakes must be left out

墙上的树 1年前已收到1个回答举报

才疏志高幼苗

共回答了13个问题采纳率：84.6% 举报

C.
A C 的逻辑主语不对,D时态不对

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墙上的树举报

答案是B，我一直想不通啊

举报才疏志高

答案确实是B, 我打错了，AC是一样的。本题的句子的主语是 the brakes, 谓语是must be left out. 动词的ing形式作状语时，它的动词和主语是主动关系。也就是说：AC中的状语相当于when the brakes leave, 这显然是不对的。B中的one指的是人，所以是对的。意思是：将车放在停车场时，一定不要刹车(估计指的是拉手刹）

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你能帮帮他们吗

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