题目内容
I had just stepped out of the bathroom and was busily drying myself with a towel________ I heard the stops.
A. while B. when C. since D. after
B
解析:此处为连词,意思是“正在这时,(突然)”。请参考高一人教版教材Unit1的一句话:One day Chuck is on a flight across the Pacific Ocean when suddenly his plane crashes.
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