it been a long time.中的“been”,为什么用这个错了。it't been a long time.

it been a long time.中的“been”,为什么用这个错了。it't been a long time. It's a long time since还是It has been a long time since It has been a long time.Are you ok? it has been a long time. what is up Hi Mary It's been a long time .语法填空 It's+been++a+long+time.been在这里起什么作用?为什么要用been 请问有首英文歌曲,歌词有句是honey,it has been a long time,……long long time 叫什么? it had been a long time ,since sb was a girl.这个过去完成式,had been 找一首英文歌 第一句是it s been a long long time It's been a long it's been a long The room ___ a stale air.It must have been vacant for a long time. It's been a long time since I last saw a film.还是It's a long time since I last saw a film. It's been a long time since I met you last 译成中文 That‘s e__ what I need!I have been looking for it for a long time It has been a long time since we last wrote to each other. it has been a long time since+?since后面加什么形式? what a long time he's been waiting,isn't it?