–Our classroom _________ twice a day. So it is very clean.–It is important for us to do this.
#44640
A
is sweeping
B
is swept
C
sweeps
D
has swept
推荐题目
I don’t think teenagers should       go to bars.
#44749
A
allow to
B
be allowed to
C
not allow to
D
be allowed
The words that we should pay attention to ________on the blackboard.
#44787
A
being written
B
are written
C
is writing
D
writing