The classroom        every day.
#44450
A
should clean
B
should be cleaned
C
should cleaned
D
should be cleaning
推荐题目
 —Tom! I looked for you everywhere at the party last night.—Oh, I          to the party.
#44393
A
am invited
B
was invited
C
am not invited
D
wasn’t invited
---Why is the classroom so dirty? --- Sorry, sir. It ______ yesterday. We forgot to do it. 
#44831
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned
— Were you allowed to go to your cousin’s birthday party?—No, I        .
#44653
A
am not invited
B
haven’t invited
C
didn’t invite
D
wasn’t invited
The man is very ill and he has _______.
#44621
A
operate on
B
to be operated on
C
to operate
D
being operated on