When the boss came in, the workers pretended ______ hard on their machines. A. to work B. to be work...
2022-08-21 15:14:27 73次 宁夏石嘴山市2018-2019学年高二下学期期中考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
When the boss came in, the workers pretended ______ hard on their machines.
A. to work B. to be working
C. to have worked D. working
本题链接：
