题目内容
【题目】She had just finished her homework ______ her mother asked her to practise playing the piano yesterday.
A. when B. while
C. after D. since
【答案】A
【解析】句意:昨天她刚刚完成作业,这时她的母亲就让她练琴。此题考查时间状语从句的连接词。when在此处与过去完成时连用表示“这时”之意。
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