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I'm sorry you've been waiting so long，but it'll still be some time ________ Brian gets back.(2008·北京)
#30452
A
before
B
since
C
till
D
after
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---- I wonder how much you charge for your services． ---- The first two are free ____  the third costs $30．
#32193
A
while
B
until　　
C
when
D
before
In the English language, sentence stress is like word stress and is _________ gives English its rhythm.
#31153
A
when
B
why
C
that
D
what
He didn’t put the things ____they belonged, for ____he got his punishment.
#30091
A
which; that
B
what; this
C
that; whose
D
where; which
It’s the first time ______ he has helped us. 
#33283
A
that
B
before
C
when
D
who
Now let me tell you the work I have been doing with them. My job with the UN is not paid, but voluntary and as I said _______, I mainly visit countries where the UN has programs to help people. 
#33796
A
before
B
although
C
even
D
in case