somebody wants to see you ,doesn't---?

答案：he
陈述部分主语是不定代词 everybody,anyone,somebody,nobody,no one等,疑问部分常用复数they,有时也用单数he.比如：
Everyone knows the answer,don't they?　(doesn't he?)
Nobody knows about it,do they?(does he?)
所以这里用don't they 也完全正确.