Question

【题目】That Sunday, we were packing to leave for a week away _____ my son heard cries for help.

A. when B. while

C. as D. because

Answer 1

【答案】A

【解析】

考查固定句式。be doing sth....when...,正在做某事的时候，这时突然---。句意：那个星期天，我们正打包离开去度周末，我儿子突然听到呼救声。故选A。