John is the very boy

John is the very boy---the foolish thing.A whom I think did B who I think didC who I think that he did D whom I think that did

热心网友

选B如果将定语从句独立出来，应该为I think he did the foolish thing答案A: I think him did the foolish thing. 答案C: I think he that he did the foolish thing.答案D：I think him that did the foolish thing.均为病句。

热心网友

选B.从句中做主语，所以用WHO，不用WHOM。排除A，D。C当中的HE是多余的，因为有了WHO就不需要HE了。