问题补充:
I’m sorry you’ve been waiting so long, but it’ll still be some time Brian get back.
A. before
B. since
C. till
D. after
答案:
(答案→)A. before
B. since
C. till
D. after
解析:考查连词。It is some time before 是一个句型,表示“在之前就有一段时间了”。
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