单项选择题

I had just stepped out of the bathroom and was busily drying myself with a towel ______ I heard the steps.

A. while
B. when
C. since
D. after
<上一题 目录 下一题>
热门 试题

单项选择题
Many things ______ impossible in the past are quite common nowadays.
A. having considered
B. considered
C. to be considered
D. considering
单项选择题
We hope that as many people as possible ______ join us for the picnic tomorrow.
A. need
B. must
C. should
D. can
相关试题