I have been asked to help out on many different floors besides the waiting room where I started.怎么翻译?

I have been asked to clean the bedroom请问have been asked ----Are going to the party?---No,because I ______.A.have asked B.haven't asked C.have been asked D.haven't been asked I have been asked to have the tree cut down.和I have been asked to cut down the tree.有什么区别么? I have been to. I have been asked to a party,but I have got nothing to wear.这个句子中的have been asked为什么不能换成wa asked?这一类的时态题该怎么作? I had to work last Sunday because I ____ to write an article for a magazine.A .asked B .had been asked C .had asked D .have been asked ----I ____ to a party,but I’ve got nothing to wear.A.was asked B.have been asked选B而不选A, ----I ____ to a party,but I’ve got nothing to wear.---- Why don’t you have a dress made for the party?A.was asked B.will ask C.have asked D.have been asked I have been asked to help out on many different floors besides the waiting room where I started.怎么翻译? “Have you ever been to桂林?he asked me.==>He asked me( )为什么选C不选B?A had I ever been to桂林B have I ever been to 桂林C whether I had ever been to桂林D if I have ever been to 桂林 Alice,where did you go last night?I was asked to go to Tom's birthday party为什么不是have been asked? ‘’Have you ever been to america ''asked Betty Have you ever been asked to leave a position? The computer programs are a puzzle to me.The more I think of them,the more questions I think of _.A.asked B.to ask C.being asked D.to have been asked答案解析 Visitors have been asked to keep the woods clean and tidy.请问中间为什么用have been asked I have been there,have been 是have been in还是have been to的缩写? —— I_____to a party,but I've got nothing to wear A was asked D have been asked—— I_____to a party,but I've got nothing to wearA was asked D have been asked请问为什么,还有为什么A不对? sorry ,what did you say just now I asked ______B.where you have been D.how I could get to the station