I still remember the days____I spent in Beijing.A.whenB.whatC.thatD.duringwhy not "A"?

I still remember i still remember是什么意思 i still remember the holidays i stayed with them .错哪? 改错：I still remember the holiday I stayed with them. I still remember the time when I frist meet i still remember that business is the salt of life I still remember the oath 中文什么意识 I will still remember you I still remember the English class three years ago remember为什么用原形 英语定语从句 I still remember the days I spent英语定语从句I still remember the days I spent in beijing.Awhen Bwhat Cthat Dduring 英语翻译I still remember the Chairman Mao look of young revolutionary guards.I still remember the Chairman Mao look of young revolutionary guards. 请问『I still remember ,i must remember. 改错I still remember the holidays that i stayed with them. I still remember the day ( ) I first came to Beijing.这个空都可以填什么? I still remember the day when I came here.when 可不可以换成on which? i still remember the day on which i first met he… i still remember the time ____ _____ we worked on the farm I still remember the old house [ ] last yearI still remember the old house [ ] last year.A where we stayed at B that was built