I was just coming to see you ( ) I ran into Wilson.A when B while C if D as.

I was coming to that. I was just coming to see you ( ) I ran into Wilson.A when B while C if D as. I was just coming along to see you___I ran into Wilson.A as Buntil Cwhile Dwhen 请具体的说明一下如何区分 while和 when 的区别 I thought it was just from coming back through the desert I know,I was trying to tell you that I was coming. I was just还是I just was peter has just arrived ,and i didn't know he was coming until last night为什么用was coming ,用had come 不行吗 it was coming to get I just want to say,I was always with I hoped tina --------to my brithday party next SundayA .to come B.is coming C.will come D.was coming I'm just coming around to have a friendly chat with you.How are you doing? As I __a letter to my teacher,Robert __to visit me.A was writing; came B wrote; cameC was writing; was coming D wrote; was coming i was just lee I was just helping .I was just overwelming I don't know when he_________.I must talk to him when he _______is coming,comes comes,is coming comes,came came,was coming The manager has just arrived ,but i did not know she until yesterday.A will come B is coming C was coming D had come 说明原因啊, James has just arrived.but i didn't know he 【 】until yesterday.A will come B was coming C had been coming D came 求明确解释.