Question

everyone knows that the chinese are very friendly ,____?

everyone knows that the chinese are very friendly ,____? A do they B are they C don't they D does he

Answer 1

C
．当陈述部分的主语是everybody, everyone, someone, nobody, no one, somebody等合成代词时，附加疑问句中的主语通常用they。
Somebody phoned while I was out, didn’t they?
Everyone enjoyed the party, didn’t they?

Answer 2

C don't they
反义疑问句。每个人都知道中国人是很友善的，不是吗？
每个人，这里是复数，所以后面选择don't they。前肯定，后否定。
只是在英文中，每个人，它用的是everyone 这个词，这个词后面接的动词通常都是单数第三人称，容易给人造成误导。

Answer 3

a