Don’t forget to turn ________the lights when you leave the office.
#48419
A
on
B
off
C
up
D
in
推荐题目
Tom looks ________, for he hardly ever exercises ____ his free time.
#46422
A
unhealthy, in
B
unhealthy, on
C
healthy, in
D
healthy, for
---__________ take out the trash after dinner?---Yes, sure.
#49892
A
How about
B
Would you mind
C
Would you like
D
Could you please
There are some apples ___ the tree. 
#50993
A
on
B
in
C
of
D
to
Look_______ the birds. They are lovely.
#48166
A
at
B
up
C
for
D
on