根据汉语提示完成句子:They---(study)the map of the country before they

问题描述:

根据汉语提示完成句子:They---(study)the map of the country before they left.
我认为可能是had studied或studied,
1个回答 分类:英语 2014-11-21

问题解答:

我来补答
had studied
study这一动作在left之前发生,所以用过去完成时.
 
 
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