---Could all the children answer the question?Sorry ,还没打完--Could all the children answer the question?--No._____could.A.Nobody B.None C.No one 还有它们三者有什么区别呢？

所有孩子都能回答这个问题吗？

A = C
none 在这里指 none of the children

这个句子有毛病呢；因该是：
Could the children answer the question?
No,none could.
No,not all of them; some could and some couldn't.
或：
Could any of the children answer the question?
Yes,some children could.
No,none of the children could.
不过,答案如下：
Could all the children answer the question?
--No.None could.
A.Nobody :It wasn't just the children,nobody else knew the answer to the question either
B.None :No,none of the children could answer the question.
C.No one :No one was able to answer the question.Not even me.