.By the time he comes back, I’m sure we ________ all these rooms of the lab. Therefore, he doesn’t h

题目简介

.By the time he comes back, I’m sure we ________ all these rooms of the lab. Therefore, he doesn’t h

题目详情

.
By the time he comes back, I’m sure we ________ all these rooms of the lab. Therefore, he doesn’t have to return.
A.have cleanedB.will be cleaning
C.will have cleanedD.have been cleaning
题型:单选题难度:偏易来源:不详

答案

C

更多内容推荐