Emily has not been to London.I heve not ,______ A.also B.either C.too D.already 要讲A.B.C.用法

Emily has not been to London.I heve not ,______ A.also B.either C.too D.already 要讲A.B.C.用法 Not been before, has been lost.是什么意思 Not only his parents but also his brother___to the Summer Palace.They haven't been back.A.have been B.have gone C.has gone D.has been Emily hasn't been to London.I haven't,().A also B or C too D already she has not been around this week Where to go tomorrow has not been A assette tape which has not been He has not been back yet This transaction has not been submitted 为什么是has not been decided Feeling has been wrong,I can not Has always been freewheeling has not changed是什么意思?请教下 this has not been easy.中has not been什么意思?怎么来的?具体点 emily If it ___ for the help of our teacher ,we would not have made so much progress.A were not B has not been C isn't D had not been为什么 Soory!I did not notice you entering the room because I _____ a phone call.answeredhas answered was answering has been answering还有didn’t写成did not有错吗？干嘛不选has been answering？ Not only his parents but also his brother_____ to the Summer Palace.They haven't been back.A.have beenB.have goneC.has beenD.has gone 英语翻译i'm not sure whether our end users will take substitutes or not .it hasn't been introduced into our market yet,has it?