Complete the sentences with the correct words.

on Mondays, tomorrow, at the moment, never, sometimes

1 ... , I'm doing this exercise!
2 I ... go to bed at 8.30 p.m.
3 I have an exam ... , so l'm going to bed early tonight.
4 My sister ... goes running before school, but not today — it's raining!
5 I have music practice after school ... , so I always get home late.