题目内容

Students can’t be made ______ all day.
A．studyB．studying C．to studyD．studied
C

试题分析：句意为：学生不能被迫整天学习。在主动句中，使役动词后接不带to的动词不定式，而变为被动句时，使役动词后应还原动词不定式符号to。故选C。
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