题目内容
Millie was watching TV ________ Andy came into the room.
A. whileB. when C. as? D. if
【答案】
B
【解析】
试题分析:句意:当安迪进入房间的时候,米莉正在看电视。A. while当……时候;从句中的动词用持续性动词; B. when当……时候;从句中的动词可以用持续性动词或非持续性动词; C. as当……时候。强调主句和从句的动作同时进行; D. if如果。根据句意故选B。
考点:考查的用法。
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