–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 think students______ to do homework with friends.
#44694
A
is allowed
B
are allowed
C
should allowed
D
should be allowed
No one knows how the huge rocks and ___ without our modern machines eight hundred years ago.
#45042
A
are cut; moved
B
were cut; move
C
are cut; moving
D
were cut; moved
In many places in China, the old over 90 not only by their family but also by the government.
#44960
A
is taking good care
B
are taken good care of
C
is taking good care of
D
are taken good care
The river smells terrible. People_______ dirty things into it .
#44850
A
must stop to throw
B
must stop from throwing
C
must be stopped to throw
D
must be stopped from throwing