—Why is the classroomso dirty?—Sorry , sir. It ____ yesterday. We forgot to do it.[ ]A. doesn't

题目简介

—Why is the classroomso dirty?—Sorry , sir. It ____ yesterday. We forgot to do it.[ ]A. doesn't

题目详情

—Why is the classroom so dirty?  
—Sorry , sir. It     ____ yesterday. We forgot to do it.
[     ]
A. doesn't clean          
B. didn't clean  
C. isn't cleaned          
D. wasn't cleaned
题型:单选题难度:中档来源:同步题

答案

D

更多内容推荐