the days __ gone.填is还是are?

the days __ gone.填is还是are? gone are the days Gone Are The Days 歌词 gone are the days 怎样用 Everything aroud us is __ ok.是填has gone 还是is gone? is **days还是are **days His trousers are on the bed.Mine __ hehind the door.应该填is 还是 Gone are the days when teachers are looked down upon. Gone are the days when we lived on the farm.Gone are the day [w58] Because of the financial crisis, days are gone ______ Farewell,all the days that have/are long gone~ gone are the days动词为什么不用过去式