---The answer to the question is very easy,isn't it?---Yes,b
---The answer to the question is very easy,isn't it?---Yes,but I don't think_____ know it. A.everybody B.anybody C.somebody D.nobody 选那个?为什么? 如果选A的话,那么know是不是应该用knows? 如果选B的话,不是说anybody用在否定句中就是somebody的变形吗?