The park _________by the cleaners every two days.
#44827
A
is swept
B
was swept
C
has swept
D
will sweep
推荐题目
This math problem        .
#44841
A
can be easily work
B
can be easily worked
C
can is easily worked
D
may easily worked
The earth is our home. It ______________ well.
#44581
A
must be protected
B
should protect
C
need protect
D
need protecting