1 have gone
2 have been
3 have been
区别：
have been 去过某地（　人已不在某地,即已回来）
have gone 去了某地,或在去的路上（　人不在这里）
加油!不明白再问!用have（has）been(gone)填空I____to windowof the World .It is wonderful becauseyou can see most famous places of interest arund the world in one day My Dad _____to shanghai.He called to tell me that he can see the whole of shanghai from the topfloor of the shanghai Pearl TV Tower1 have been 2 has gone