Whentheteachercamein,hecoveredhismobilephonewithatextb...
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问题详情:
When the teacher came in, he covered his mobile phone with a textbook and pretended _______his homework.
A. to do B. doing C. to be doing D. to have done
【回答】
C
知识点:非谓语动词
题型:选择题
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