They( were playing football )at that time.(对括号部分提问) ( ) were they ( ) at that time?
题目
They( were playing football )at that time.(对括号部分提问) ( ) were they ( ) at that time?
答案
what were they doing at that time?
举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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