I was reading attentively in my own room suddenly he knocked at the door. A. whenB. whil

发布时间：2020-08-16 14:28:07

I was reading attentively in my own room      suddenly he knocked at the door.
A. when
B. while
C. then
D. as

网友回答

(答案→)A. when
B. while
C. then
D. as
解析：词义辨析。When表示当……时候；while和as表示两个动作同时发生；then的意思是那时；然后。句意：当他突然敲门时，我这在自己的房间里认真的读书。动作有先后，故选A。
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