中文谷Weknowthatsomething
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问题详情：
We know that something ____ to end it.
A. must is done B. must be done C. must do D. must done
【回答】
B
知识点：动词语态
题型：选择题
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问题详情：
We know that something ____ to end it.
A. must is done B. must be done C. must do D. must done
【回答】
B
知识点：动词语态
题型：选择题
