问题

I had just stepped out of the bathroom and was busy drying myself with a towel ________ I heardthe steps.[ ]

A: while
B: when
C: since
D: after

正确答案是：

同类题型

I was ________ by the salesman whose products turnedout to be much less effective.

Could you please ____ me your name—Sure. My name is Kate.

_____ at my classmates’ faces, I read the sameexcitement in their eyes. [ ]

She wants thefootball club.

you are caught late for the thirdtime—Oh, __________