I has been与I have beenI has been a fan of American country music.这句话是对的吗,我记得是第三人称单数才用has啊……如果是对的,请说出原因

i has been doing 还是i have been doing I have been like flowers wither has. I remember that I have loved you ,,,Has been . He has been to Canada.So have I.这里为什么不是 So has I 呢 I have been selling I have been trying I have ever been I too have been I have been to. I have been I have been in. i have been waiting for you请问have been 怎么不have be或者直接 i have waiting for you I think it ______ in 1967 that I visited the Great Lake the first time.A：will have been B：has to be C：must be D：must have been By this time tomorrow ,I bet the contract___ A has been prevented B will have been signedC is signed D will be signed请说明理由 I have been here 与I have been living here一样吗?有点弄不清楚. I ________ here for 10 years.A.has been B.have gone C.has gone D.have been I think I have tried my best.All that can be done ___.A.has done B.has been done C.had done D.had been done为什么选B不选D My stand____what it is,I have to oppose what they have suggested.A.is B.being C.has been D.be选什么?为什么?