It has not been decided ___ they will leave for New York.选项:a、when b、why c、that d、 what选哪个?为什么?请分析并翻译整句

Believe it or not,anyway,my heart has been to.You can also choose not love Believe it or not,Jack has been to Beijing.为什么要用has been to,不用was to Not been before, has been lost.是什么意思 it has been since.用法 It has been in my it is/has been= It's has been accepted it has long been assumed It is not I who ______ wrong.A.is B.are C.am D.has been It is worth reminding ourselves that this has not always been the case in America Love it,just as the same has not been subject to injury Almost every driver knows it has been a (l ) not to drive cars after drinkin Uncomfortable habit,habit thoughts,habits,and you,but it has not been accustomed to see you. The children ___homework has not been done yet should finish it after class Ever has it been that love knows not its own depth until the hour of separation! lt has not been the time yet to give up as long as you still feel it is not the it has been decided ____they will leave for shanghai.填when还是ifit has not been decided ____they will leave for shanghai.填when还是ifit has not been decided ____these foreign guests will visit our college. it has not been made clear when it is to be opened to traffic中的when换成that