英语翻译1,of which / on which / for which / in whichThis is the

英语翻译
1,of which / on which / for which / in which
This is the school ____ I studied for 3 years
I will never forget the day _____ my father bought me a cell phone
l agree with the idea ____ you approve
Please give me the reason ____ you were late again
还要翻译!急