I'm sorry you've been waiting so long, b
题型:选择题
问题:
I'm sorry you've been waiting so long, but it'll still be some time ____ Tim gets back. |
A. until B. before C. after D. since |
I'm sorry you've been waiting so long, but it'll still be some time ____ Tim gets back. |
A. until B. before C. after D. since |