1.Iam always very busy on Sunday, but Bob is very free___.
2.Math is really useful___ but difficult.
3.I always have art lesson___ on Saturday.
4.We have an English lesson for an hour___ every day.
5.Their classes finish___ at 5:00 in the afternoon.
6.We go to school from___ Monday to Friday.
7.Sunday___ is the first day of a week.
8.We have P.E. and are on Wednesday___.