It'salongtimesinceisawyoulast这是什么从句(可以给我解释一下吗(

It'salongtimesinceisawyoulast这是什么从句(可以给我解释一下吗(

猜你感兴趣： it is long that   it ____ a long time since we last met.   it's a long time since i saw you last   it wasn't long since   it is along   it's a long time _______ i met you last time.   it wasn't long   it's a long time since i saw   it wasn't long until   it is long since