题目内容
【题目】One Friday,we were packing to leave for a weekend away___my daughter heard cries for help
A.after
B.while
C.since
D.when
【答案】D
【解析】句意：一个周五，我们正在打包要出去度周末，就在那时我女儿听到有人求救的声音。本题考查“be doing…when…”这一句型结构，在本结构中，when是并列连词，相当于and at that time
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