—Why is the classroom so dirty?—Sorry，sir. It yesterday, We forgot to do it.
#39874
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned
推荐题目
— Hi, Linda. I didn’t see you at the party last night.— Oh, I ready for the math exam all the time.
#36646
A
have got
B
am getting
C
got
D
was getting
—— What __________ he do? —— He __________ an actor.
#41499
A
is, is
B
does, does
C
does, is
D
is, does
The teachers ________ on the blackboard with chalk in the future.
#39033
A
isn't writing
B
didn't write
C
don't write
D
won't write