--The book isn't easy for Jack to understand,is it?

问题描述:

--The book isn't easy for Jack to understand,is it?
--_____ .His foreign language is far better than expexted.
A.I don't think so
B.Yes,it is .
是否两者都行

只能选B 因为 前面is it是一个反意疑问句
所以回答只能用yes 或者no