'my english has been improved' or 'my english has improved',which is correct?

'my english has been improved' or 'my english has improved',which is correct? ( )My English teacher ______ England twice.A.has been to B.has gone to My father has taught English for ten years My father has been teaching English for ten yearsMy father has taught English for ten yearsMy father has been teaching English for ten years都对吗? Mr.black,my English teacher,（）China for many yearsA has been to B has gone toC has been in D has come to My english teacher has been to( london )twice.对划线部分提问＿ ＿your English teacher＿twice? It has been in my he has been in english since last ---I thought you had () English.---No.It has be---I thought you had () English.---No.It has been useful in my work.A.studiedB.droppedC.failedD.passed My English teacher ______ the Gerat Wall three times since he came to chinaA.has been to B.has been C.has gone to D.has gone,但是短暂性动词,不是不能跟since吗? My English book -------.I can't lend it to you.A.has been lost B.was lost C.lost D.has lost My mother has never been abroad My brother has never been abroad before为啥加been? His English has been improve a lot .His English has improve a lot. he has been learning english for 2 years in college. he has been in english since last 什么意思 English has been notorious as a word borrower什么意思 my English teacher has been to australia and britain (Australia and Britain划线提问,是不是用where可是有两根横线,1 My father ___ up English in his thirties.Now he has been a volunteer for the Expo.A.picked B.gotC.took D.looked