——Why is the classroom so dirty?——Sorry, Sir. It _____ yesterday. We forgot to do it.
#41937
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned
推荐题目
Don’t be late. There______ a class meeting this afternoon.
#42673
A
isgoingtobe
B
isgoingtohave
C
has
D
had
A moment, please．I’m checking if Mr. Smith _________ free tomorrow．
#42733
A
is
B
being
C
to be
D
will be
When the teacher came into the classroom, the students ____ in groups.
#39479
A
work
B
have worked
C
were working
D
are working
My mother ________ as an architect since she graduated from Tongji University.
#36241
A
worked
B
has worked
C
had worked
D
is working