请举出各一个主语是nobody 和 something的反意疑问句。

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。
Everyone knows the answer, don't they? (does he?)
Nobody knows about it, do they? (does he?)

资料来源：http://cb.yyzb.cn/GrammerOnline/right.jsp?id=256

当陈述部分的主语是everything, anything, something, nothing等表示物的不定代词时，反意疑问句部分的主语用it。
Everything has gone wrong today, hasn”t it?

资料来源：http://www2.chinaedu.com/101resource004/wenjianku/200752/101ktb/lanmu1/f20e0374/f20e0374.htm

nobody There is nobody here,isn't?
something I told him if he need something ,just tell me,shouldn"t i?

Nobody is silly,isnt it ?

something wrong happened bettween you ,didnt it ?

Nob