Theteacherdidn’tknowwho

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问题详情:

 Theteacherdidn’tknowwho

 The teacher didn’t know who ________ for the broken window because it happened while he was out.

A. is to be blamed         B. to be blamed       C. blamed              D. to blame

【回答】

D

知识点:非谓语动词

题型:选择题

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