——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
I ______ Mr. Smith since he moved to Shanghai.
#39960
A
didn’t hear from
B
don’t hear from
C
haven’t heard from
D
won’t hear from
The film for five minutes when she got there.
#42697
A
has begun
B
has been on
C
had begun
D
had been on
Most people _______when the big earthquake took place in that area.
#41920
A
are sleeping
B
were sleeping
C
slept
D
sleep
-What are you going to do this Sunday? -I ________ yet.
#40050
A
won't decide
B
didn't decide
C
haven't decided
D
don't decide
You shouldn’t ________ here . The baby _____.
#41887
A
play; sleeping
B
to play; is sleeping
C
plays; sleeps
D
play ; is sleeping