I didn't know how to do? I didn't know what to do? I didn't know _英语解答

I didn't know how to do? I didn't know what to do? I didn't know that I do?这三句有什么区别啊?

人气：415 ℃　时间：2019-09-22 09:25:41

解答

我不知道怎么做.
我不知道做什么.
我不知道我做.