One Friday, we were packing to leave for a weekend away my daughter heard cries
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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
试题答案
D解析：be doing...when...“正在干某事突然……”，when“在这时，在那时”，相当于at this/that time。句意：在某个周五，我们正在为周末的出行而打包，这时女儿听到了求救声。故选D项。