唱赵子龙的歌:It s been reining since you leffime

It s been reining since you leffime 求Staind《It's Been Awhile》！！！ It's already been written it's been coverd.. 是什么意思? It's been a_______(快乐)to talk t you . It's 3 years since I saw him last time. 中的it's 能否换成has been? It,s aiways been you.do you know是汉语意思是什么? I've never been to beijing, but it's the place _. It’s now exactly half past seven. _______ , the doctor has been here for two hours. SI是什么意思，在it界？？