Don’t stand up until you ____________.
#44883
A
tell to
B
are told
C
are told to
D
are told to do
推荐题目
----Smoking should ____________ in school. ----I agree. It’s bad for our health.
#44526
A
be allowed
B
not allow
C
allow
D
not be allowed
Look! The tree is growing well. When______? 
#44523
A
was it planted
B
did it plant
C
will it be planted
D
is it planted[
Usually John ________ to school in his father’s beautiful car.
#45016
A
has taken
B
is taking
C
is taken
D
has been taken