I don‘t know him,i‘ve never____him before.划线部分填什么?

I don‘t know him,i‘ve never____him before.划线部分填什么? I don't know him. I don't know等于I've( )( ). 英语翻译I know how you feel inside I've been there before Don't I 've know him since he came here.(对划线部分提问since he came here 翻译I don't think you've heard of him before,have you? I don't think you've heard of him before,____?A.have you B.d I've.never.felt.this.way.about.anyone.before!…You.don't.know _____ I've known him for a long time, _______I don't know hi I've known him for a long time,but I don't know him well(用th 一个单选I've-----him but I don't know him A.heard about B.learne I don't know him well enough.