问题补充:
I was about to leave the officean unexpected visitors came.
A. while
B. as
C. when
D. before
答案:
A. while
B. as
(答案→)C. when
D. before
解析:可联系答.案.网客服索取。
时间:2018-12-03 03:34:10
I was about to leave the officean unexpected visitors came.
A. while
B. as
C. when
D. before
A. while
B. as
(答案→)C. when
D. before
解析:可联系答.案.网客服索取。