题目内容：

I think it was jack who said that,---------?A don't I B doesn't he C didn't

优质解答

C didn't he

追问：

为什么？

追答：

I think 开头的句子，变反义疑问句主要变它后边的句子，本题中，后边的句子又是一个强调句。强调句变反义疑问句，又要以正常语序为准， 所以，本句的主要句子是 Jack said that。 把它变成反义疑问句就可以了