he has just gone to Alicesprings.he has never __there before

he has just gone to Alicesprings.he has never __there before Mike________be here now beacuse he has just gone to Washingt He has gone to Beijing He has gone to _____. -----Tony's never been to Disneyland before,has he -----____ He has never been to see a clairvoyant before. he has never stolen anything before,has he ——He has never been to Hong Kong before,has he?——___________ he has never (eat) beijing duck before He has never stolen anything before,____he? He has just bought an Australian car and has gone to Alice S He has never gone to the science museum 为什么用gone?不是用been?