【关于定语从句1.threediversweretodivetotheplace____laythesunkenshipsoastogetsomeinformationabouttheship.thatonwhichwhere不填选哪一个?并说明原因+翻译全句2.theformerfriendsarequarrellingtosuchasituatio】

　　关于定语从句

　　1.threediversweretodivetotheplace____laythesunkenshipsoastogetsomeinformationabouttheship.

　　thatonwhichwhere不填选哪一个?并说明原因+翻译全句

　　2.theformerfriendsarequarrellingtosuchasituation___theyturnedtheirbackstoeachother.

　　whenwherehowwhy选哪一个?并说明原因

　　3.shegratuatedfromuniversityin1984,_____fewpeopleinchinawereabletospeakenglish.是不是as和when都可以?为什么?