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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