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
网友回答
A. after
B. while
C. since
(答案→)D. when
解析：考察固定句式。固定句式：be doing sth when…正在做某事在这时…；本句中的when是一个并列连词，表示上下文的并列关系。句意：一个星期五，我们正在收拾东西准备去度周末在这时我的女儿听见求救的哭声。故D正确。