I forget which city will h____ next Olympic Games.Can you tell me?

I forget which city will h____ next Olympic Games.Can you tell me? I'll never forget the years ____ I spent in that city with my aunt,____ has a great effect on my life.A.when...which B.when...that C.that...which D.which...whoWhich one?Why? which city I will never forget the days___ I spent with youwhen or which?答案是WHICH I will never forget these days (which )we spent together.为什么填which,而不是when, I shall never forget the day in which I joined the league是上句对还是I shall never forget the day on which I joined the league对? I like the city which I live in 还是 I like the city where I live inRT I'll never forget the factory ___ (what/which) I worked five years agoI'll never forget the factory ___ (that/which) I worked five years ago that is the day ( ) I'll never forget.A.which B.on which c.in which D.when I will never forget the day ____ I spent with you.为什么答案是which? I'll never forget the factory ___ (that/which) I worked five years ago i never forget the days ()i spent with my mother为什么选that,不选which? this is the city which i llike,用that代替which可否?注明理由 I still remember the day______I first came to the college.A.on whichB.in whichC.at whichD.which2.,They will never forget the day ____they got married.A.that B.which C.in which D.when 3.The factory ___his mother works is in the east of the city.A.that 2010年杭州教学检测英语的一道选择题,Ill never forget such an attractive city ___ I spent many happy hours there with my classmates last summer holidays.A.when B.where C.in which D.because答案是D（解析：作原因状语从句） I will never forget the days (when/that/which)we spent together. I will never forget the days (when/that/which)we worked together.说明理由 you have taught me a lesson which i will never forget