问题
选择题
I’m sorry you’ve been waiting so long, but it’ll still be some time ___ Brian gets back.
A．before
B．since
C．when
D．after
答案
答案：A
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I’m sorry you’ve been waiting so long, but it’ll still be some time ___ Brian gets back.
A．before
B．since
C．when
D．after
答案：A