isn't he
当陈述部分为主从复合句时,附加疑问部分一般应与主句的主语和谓语动词保持对应关系.如：
She says that I did it,doesn’t she?
I told them not everybody could do it ,didn’t
但当陈述部分的主语是I,谓语是think,believe,suppose,expect这类动词时,附加疑问部分则往往与从句中的主语和谓语动词保持对应关系,但要注意否定的转移.
I suppose that he’s serious isn’t he?
I don’t think she cares,does she?