_____ on the subject for half an hour, Liu Ying suddenly stopped. [ ]A. To be worked B. To work C. H

题目简介

_____ on the subject for half an hour, Liu Ying suddenly stopped. [ ]A. To be worked B. To work C. H

题目详情

_____ on the subject for half an hour, Liu Ying suddenly stopped.
[     ]
A. To be worked
B. To work
C. Having worked
D. Having been worked
题型:单选题难度:中档来源:吉林省期中题

答案

C

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