when do you do most of your study?用英文回答,不少于2句话

when do you do most of your study?
答 I usualy do my study in the morning.Because my brain can stay wake at that time.
我总是在早上学习,因为我的脑袋能保持清醒
how much time people should spend working
答It depends.Different kinds of work need different time.
看情况,不同的工作需要不同的时间

I do most of my study in the evenings. Sometimes I do it at the weekend.

when do you do most of your study？（你一般啥时候学习）
I do most of my study when I have enough time.I never do it at home.（一般在我有足够的时间的时候。我从来不在家学习。）
how much time people should spend working? （人们应该用多长时间...