---May I go and play with Tom this afternoon, mum? ---No．You can’t go out ______ your homework is being done．
#33631
A
until
B
after
C
before
D
as
推荐题目
With some technical problems to be solved, it may be a while _______ the system is put into use.
#32713
A
when
B
after
C
since
D
before
(2014·辽宁五校第一联合体考试)What impresses me most is________he appears in front of others，he wears a sincere and charming smile.
#30034
A
what
B
which
C
that where
D
that whenever
________you like the portable personal computer so much，why not buy one?
#30044
A
So that
B
Now that
C
Even if
D
In case
She had just finished her homework her mother asked her to practice playing the piano yesterday.
#30926
A
when
B
while
C
after
D
since