根据字首字母完成单词 W_ my father was cooking,my father was watching TV.（请说出原因）
问题描述：
根据字首字母完成单词 W_ my father was cooking,my father was watching TV.（请说出原因）
答
答案为While,前后都是过去进行时,while强调主句的两个动作同时发生.