____ for months, the room is very dirty. [ ]A. We don't clean it B. Having not cleaned C. Not h

题目简介

____ for months, the room is very dirty. [ ]A. We don't clean it B. Having not cleaned C. Not h

题目详情

____ for months, the room is very dirty.
[     ]
A. We don't clean it          
B. Having not cleaned
C. Not having been cleaned    
D. Having not been cleaned
题型:单选题难度:中档来源:同步题

答案

C

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