—Mom, can I go out and play with my friends now?—No, honey, you can’t _____ you haven’t recovered from the knee injury.
#30180
A
until
B
before
C
as
D
unless
推荐题目
We should consider the students’ request _____ the school library provide more books on popular science．
#34411
A
that
B
when
C
which
D
where
(2013·成都第一次诊断)Actually, the London Olympic Park is built ________ there used to be a poor area called East London.
#30426
A
what
B
when
C
where
D
why
In some places women are expected to earn money ______ men work at home and raise their children.
#32326
A
but
B
while
C
because
D
though
You can keep all the files and documents you think it is convenient to get them．
#30188
A
what
B
how
C
where
D
when