摘要： [2010·云南昆明三中第七次月考]She had just finished her homework her mother asked her to practise playing the piano yesterday. A. when B. while C. after D. since 2A考查时间状语从句的连接词.此处when就在这时.句意:昨天她刚刚完成作业这时她的母亲就让她练琴.

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