请教英语问题The Great Wall has been ______ from time to time.A.add

The house has been (add to ) from time to time 中(add to ______ of us has a great time in the party He has been to the Great Wall中为什么been How many times have you been to the Great wall?为什time要加s Have they e_______(at any time )been to the Great Wall? It's my ______(one) time to visit the Great Wall. there has been a picture on the wall for a long time. Jane has never been to the Great Wall,____? The Greens ______ (have) been to the Great Wall twice. there has been a picture on the wall for long time. he who has never been to the Great Wall is not a tire He who has never been to the Great Wall is not a ture man.Th