Complete the questions with in, on or at.1 Do you sometimes

Complete the questions with in, on or at.

1 Do you sometimes watch TV ____ the mornings?
2 Are you usually at home ____ 7 o'clock ____ the evenings?
3 Do you sometimes work ___night?
4 What do you usually do ____ weekends?
5 Do you usually go shopping ____ Saturdays?
6 Do you go skiing ____ the winter?
7 Do you have a holiday ____ December?
8 Is there a holiday in your country ____ 6, January?