刘恺威终艺节目:I`m going to join them. I`ll try my best __B__ I do it. A.if B.when C.once 为什么选B

I`m going to join them. I`ll try my best __B__ I do it. A.if B.when C.once 为什么选B I'm going to Today Beach,------? i'm going to the sky I'm going to xidan I'm going to my ____ this afternoon. I'm going to see the king with apples I'm going to see the king with apples I'm going to shoping with my mother I'm going to shopping with my mother I was going to just now.. but I\'m talking to you.