the engineer _________(search) for some informaation on the internet in the study while his wifewas cooking
问题描述:
the engineer _________(search) for some informaation on the internet in the study while his wife
was cooking
答
while这里是并列连词 表示对比 关系
故 答案是 was searching
答
was searching
考察while的用法
答
was searching 表示两个同时发生的动作.