Years in which you participated 9th 10th 11th 12thYears in which you participated 上面四项都可以选择那这里的9th 10th 11th 12th代表什么呢这和我参加的活动有什么关系

have you ever been to shanghai ,____i left ten years agoA.where B.which C.in which D.when Where would you like to be in five years from now from both individual and p I SHALL NEVER FORGET THOSE YEARS WHEN I LIVED IN THE FARM WHICH YOU VISITED LAST WEEK 的意思 Is the house_____ you lived in ten years ago?A.where B.the one C.which为什么 I'll meet you __________we firet met each other two years go是用where还是用in which,为什么? Thank you for sharing the past four years with us,which is funny & useful,full of joy & energy in I’ll never forget the time when (=on which) we worked on the farm.Do you still remember the afternoon when (=in which) we first met three years ago?为什么一个用in which,一个用on which? The place ____ you stayed for 3 years is where an ancient city used to be.是at which 可以用 in which 为什么 这么用? which country are you in? which grade are you in? Which are you in school? Which school are you in? Which class are you in? Which class are you in? My father worked in the factory for forty years,(where;that;in which;which)Ivisited yesterday which do you p( ) ,train or plane you were in china（ ）two years. You were in China for tow years.