I was about to get on the bus _________someone called. A．as B．when C．before D．while
2022-12-26 17:15:42 204次 2015届辽宁盘锦第二高级中学高一上第二次阶段考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I was about to get on the bus
_________someone called.
|
A．as
|
B．when
|
C．before
|
D．while
|
本题链接：
