如果别人问你"What's your nationality ?"你应该回答"China"还是"Chinese"?

如果别人问你What's your nationality ?你应该回答China还是Chinese? 如果别人问你what's up/what's going on 这类打招呼的话你需不需要回答?怎么回答? 别人问你What's your nationality 为什么回答Chinese别人不是问你的国籍吗?China才是国籍啊! 当别人问你:Is that Mary speaking?应该回答Yes,A.Who are you?B.I'm here.C.Who's that.D.What's your neam? 英语 名词语法,答：it is a pair of chopsticks.那么应该怎么问：what's this 还是 what are these 如果不知道别人怎么回答，你指着筷子应该问：what's this ,还是 what are these 问:what's your job? 问你怎么了是“What's your trouble”还是“What's the trouble ” 如果对方问你“what's up?”能不能回答terrible what's the big deal 这句话,是问别人你这么做是什么意思? what's up 如果别人问我我该怎么回答 What's your father?是问什么? what's happened 中的“s”是has吗?还是is?还是was?还是什么?what's happened和what happened有区别吗?如果别人问what's happened应该怎么回答?问what happened又该怎么回答? What is your snail 别人问我的```` What's your phone（n ） 问外国人你姓什么,是what's your family name? 如果有美国人问你what's up?你该怎么回答? 请教what's the climate like in your country?这一句话如果用 what about问是什么样的 如果别人问你干嘛呢你怎么说?搞笑点.