It’s necessary ______ us to keep our pets clean everyday.
#51110
A
of
B
for
C
with
D
between
推荐题目
With a school built in the village, the children needn't climb______ the mountain for study.
#46074
A
over
B
at
C
for
D
in
Drugs can do great harm (危害) not only to you but also to your family. You must be _________them.
#50731
A
along with
B
out of
C
in front of
D
away from