I’m sorry you’ve been waiting so long but it’ll still be some time Brian gets.back.A. b

问题补充：

I’m sorry you’ve been waiting so long, but it’ll still be some time Brian gets.back.

A. before

B. since

C. till

D. after

答案：

(答案→)A. before

B. since

C. till

D. after

解析：根据句意，只有填before时意思最通顺。It’ll be some time before…是英语中一个很有用的句式，其意为“要过一段时间才……”，如：It’ll be some time before we meet again. 要过一段时间我们才能见面。有时也可用其他时态，如：It was some time before we struck the track. 我们用了很长时间才找到了路。