I read a book from 2:00 p.m. to 3:00 p.m
( I want to say that I read a book, but in a week I am going to read other book, because I will finish with first one and it is my timetable that I have been doing the same things at the same time all my life)
I read books from 2:00 p.m. to 3:00 p.m.
I watch a film from 4:00 p.m. to 6:00 p.m.
I watch films from 4:00 p.m. to 6:00 p.m