What was David doing at ten o'clock yesterday evening?Did they know?Did they know ____David____doing at ten o'clock yesterday evening?

What does David like doing after what are David and Mary doing?---They__(have dinner) What was David doing at ten o'clock yesterday evening?Did they know?Did they know ____David____doing at ten o'clock yesterday evening? what was sally doing during the news? what's David doing?——He is b with his homework.后面加什么? what was she doing还有一个what she was doing两者有什么区别? -What's David's dog doing?-（ ）is singing.A.She B.He C.It.要理由 what was the drive doing at that time? what was he doing when she ufo arriuea?翻译 what were you doing while i was away last week What was Mary doing __ the time?空格两个字母 what was the girl doing when the ufo took on? They asked what late was doing then 的意思? What was Davy doing when Linda _____（final) saw him? he said what he was doing his homework是什么句式 I didn't know what--------then.A.he was doing B.was he doing C.he is doing D.is he doing The policeman asked him ___ when the accident happended.A what was he doing B what did he do C what he was doing D what he did the policeman asked me ____at this time yesterday.A what was i doing B what did i do C what I was doing D what I do