There has been a _____ increase in the teacher's salary in recent years.(A) temporary (B) key (C) significant (D) wide并请说明原因,选择D,大大提高,为什么不对?

There has been a misunderstanding. I hear that your teacher ___ to English once.Yes,he ___ there last year.A.gone;went B.has been;has been C.went;has been D.has been;went选什么?理由 英语选择题关于has gone has been--- __ Peter__ to Japan yet?--- yes.He ___ there twice.a.did,go,has gone b.has,gone,has beenc.has,been,has beend.has,gone,went为什么不能选b? Since he was made ___ director of the sales department,there __a rapid increase in salesA.a ; was B.the; has been C./;was D./;has been 求详解,there has been a ___ of accidents at the crossroad.A series B variety C number D lot Amy ___ the library.She______ book there times a week.A has gone to； has been used to borrowingB has gone to; is used to borrowing I have been to Tai'an.He has been there,too.组成一句___ ___ I ___ ___ he has been to Tai'an There ___ great changes in computers in the last few years.A.have hadB.haveC.have beenD.has been He knows Wuxi very well because he has been there ___ A sometime B some time C some times he has been there teice （twice划线）对划线部分提问___ ___ ___has he been there? Did your brother go to America last year No,___.A he did never go there Bhe has gone never there Che's never been there ( )--He's never been to Beijing,___?--___.He will go there next week for the first time.( )--He's never been to Beijing,___?--___.He will go there next week for the first time.A.has he;Yes,he has.B .has he;No,he hasn't .C hasn't he ;.Yes,he has.D has He is talking so much about America as if he ___ there.A.had been B.has been C.was D.were为什么选A不选B? (A) 5 He ___ there many times. A. has been B. went C. has been to D. has gone 这题为什么选A这题为何选A不选C.能回答出来我给加分! How long ___ the film ___?A did，begin B has，begin C has，been to D has，been there has been a time和there had been a time有什么区别? Mr Smith ___ at this school since he ___ to Zhuhai.A:has been taught; came B:has taught; has comeC:has been teaching; has come D:has been teaching; came为什么选D?has been teaching是什么时态? It has been there since a t_ years ago .