Choose at/on/in.

1. The stars
   [at|on|in]
   night are very beautiful.
2. I get up
   [at|on|in]
   7 o'clock in the morning.
3. I always have a shower
   [at|on|in]
   the evening.
4. Let's meet
   [at|on|in]
   Monday!
5. Were you born
   [at|on|in]
   26 March?
6. My parents got married
   [at|on|in]
   June.
7. Do you have trainings
   [at|on|in]
   Thursday evenings?
8. Does your sister go out
   [at|on|in]
   the evenings?