And what do you do in the evening?And what do you do an the weekend?在这两个例句中,为什么句用的是“in".一句用的是‘at’.能用on替代吗

how often do you ill?very often,and i do not kvow what to do改错 oh,yeah.i do my homework on sundays.and what do you do on sundays? Can you do what I can do? what do I do without you what do you enjoy?I enjoy ( ) computer games and ( ) music what do you think i you do your thing and I do do what you ought,and come what Do you think what should I do 还是Do you think what I should do what do you do .haw can I do it what-----(do)you-------(do)on Sundays?I'-----(do)my homework. What do you do it? I do overtime!谢谢 what do you do? “what do you do! What do you do? what do you do What do you usually do at weekends?I usually（ ）(watch) TV and （ ）catch) insects? 14.What do you usually do at weekends?I usually () (watch) TV and ()(catch) insects?