中文谷Inordertofindthemissingchild,villagers allt...
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问题详情：
In order to find the missing child, villagers all they can over the past five hours.
A. did B. do C. had done D. have been doing
【回答】
D
知识点：现在完成进行时及其被动式
题型：选择题
标签：
allt
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