1._____(all,both,every,each) my parents are from Xi'an.2._____(it,this,that) necessary to tell his father everything?3.A:_____(something,nothing,anything) is wrong with my throat.I just feel thirsty.B:Why not have _____(some,any,every) water?说明

1._____(all,both,every,each) my parents are from Xi'an.2._____(it,this,that) necessary to tell his father everything?3.A:_____(something,nothing,anything) is wrong with my throat.I just feel thirsty.B:Why not have _____(some,any,every) water?说明
1._____(all,both,every,each) my parents are from Xi'an.
2._____(it,this,that) necessary to tell his father everything?
3.A:_____(something,nothing,anything) is wrong with my throat.I just feel thirsty.
B:Why not have _____(some,any,every) water?
说明括号里的每一个单词不能填的、能填的理由
就3题,还有别的不敢麻烦各位了,另开个提问.

1._____(all,both,every,each) my parents are from Xi'an.2._____(it,this,that) necessary to tell his father everything?3.A:_____(something,nothing,anything) is wrong with my throat.I just feel thirsty.B:Why not have _____(some,any,every) water?说明
1:both ,父母是两个人,all用于三人或以上,each,every指个人 2：it,形式代词,指代后面的tell his farther every.3:something,some