--Whyistheclassroomsodirty?--Sorry,sir.It
问题详情:
--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
【回答】
D
知识点:动词时态
题型:选择题
问题详情:
--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
【回答】
D
知识点:动词时态
题型:选择题