I have mountains of housework to do in the weekend.
I prefer to read than watch TV.
2.I have mountains of housework to do on weekends.
3.Compaing with watch TV,I prefer to read books
I have mountains of housework to do during the weekends.
I prefer reading books to watching TV.
i have mountains of housework to do at the weekend.
I prefer to read books rather than wacth TV.