——Why is the classroom so dirty?——Sorry, Sir. It _____ yesterday. We forgot to do it.
#41875
A
doesn't clean
B
didn't clean
C
isn't cleaned
D
wasn't cleaned
推荐题目
— What do you think of the Voice of China?— I have no idea, because I it yet.
#36230
A
didn’t see
B
don’t see
C
won’t see
D
haven’t seen
Our life _________ greatly in the last ten years.
#39738
A
changed
B
has changed
C
have changed
D
is changed
Many accidents _________ by careless drivers last year .
#39725
A
are caused
B
were caused
C
have caused
D
will cause
--- Can you tell us ________?--- Of course, but they’re coming over to visit me in a few months.
#39907
A
why did you come to China
B
who are your best friends
C
if you miss your parents
D
where you give the concert