I have___him since a long time agoAmet Bseen Cknown Dfound

I have___him since a long time agoAmet Bseen Cknown Dfound I have___him for a long time.空上请帮忙填出“理解,懂得”的表达.我想这得用延续性动词吧,该用什么词呢? not since开头的用法I haven't seen my uncle since I was a child.(begin with not since) i have been here ( )a year.A,since B,for it is over a year since i met him 为什么要用since since前不是要用完成时吗? I haven't seen her since yesterday .划线部分since 用a few mintes ago 代替 _________have you been traveling Since I was a boyA Since whenB WhenC For whenD How much it's a long time since i last saw you i haven't watched a movie since last month it's really been a longtime since i went home. i not (get) a letter form her since she left It (be)five years since I (ride)a bike. I ___(know) him since he ___(is)a child I found my watch since a week.改错 It is a year since I goodbye to him .(say) obviously not a whole lot since i‘m sitting here i think it's been a long time since i've heard anyone is good since在这里是什么用法? i have lived shenyang since i was a young child.i have lived shenyang since_ _