选c
解析：反义疑问句
1．陈述部分肯定式+疑问部分否定式可记为前肯后否定.
They work hard,don’t they?
2．陈述部分否定式+疑问部分肯定式可记为前否后肯定.
You didn't go,did you?
陈述部分有never,seldom,hardly,few,little,barely,scarcely,
nothing,none,rarely ,no,not,no one,nobody,neither等否定意义的词汇时,后面的反意疑问句则为肯定形式：
There are few apples in the basket,are there?
He can hardly swim,can he?
They seldom come late,do they?