用 nothing
注释：
none 与 nothing 用法之区别：
1.none
1)可与of连用；2)谓语动词用单或复数；3)具体指什么人或物；4)一般用来回答有范围的句子how many +n,how much +n及含any+n引起的疑问句.请看：
1)None of us have/has seen him.
2)——How many students are there in the room?——None.
3)——Is there any water in the thermos?——None.
4)——How much money do you have on you?——None.
2.nothing
1)指物；2)谓语用单数；3)一般用来回答含anything的一般问句及what引起的特殊问句.请看：
1)——What is in the box?——Nothing.
2)——Is there anything in the sky?——Nothing.
3)——Can you see anything without glasses?——Nothing.