all the homework assigned by the school the students have to work at it till midnightA. C

发布时间:2020-08-17 08:28:40

    all  the homework assigned by the school the students have to work at it till midnight
A. Completing
B. To plete
C. Having pleted
D. To have pleted

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A. Completing
(答案→)B. To plete
C. Having pleted
D. To have pleted
解析:句意:为了完成学校布置的全部的家庭作业,学生们不得不学习到了午夜。表示目的,为了……,故用不定式,且与谓语动词表示的动作没有时间的先后顺序,故用不定式的一般式,选B。
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