The children stood a line, then walkedquietly into the hall. A B C DA stood---formed

发布时间:2020-08-17 13:34:30

The children stood a line, then walkedquietly into the hall.
A              B     C          DA  stood---formed 

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(答案→)A  stood---formed 
解析:这里意思是形成一队列。
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