——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
 Be quiet! The students ______ a physics test in the next room.
#36443
A
had
B
have had
C
were having
D
are having
---Does Tom know anything about the accident that happened to his father?--- No. We ____ him anything about it.
#41925
A
don’t tell
B
aren’t telling
C
haven’t told
D
aren’t going to tell
There is a big bank near my home and it  three years ago.
#39945
A
is built
B
are built
C
was built
D
is building
There _______ a football match in our school next week.
#41798
A
is going to have
B
is
C
is going to be
D
are