Fill in the appropriate prepositions of time “in”, “on” or “at”.

1) Anna always starts work __ 9 o’clock ___ the morning and finishes at 7 o’clock ____ evening.
2) The last bus leaves _____ midnight.
3) There were lots of important discoveries _____ 19th century
4) In Ukraine, people usually go to church _____ Christmas.
5) My sister has her birthday ______ February 2nd.
6)My family always go to Switzerland _____ winter.
7) I like going to the gym ____ the weekend.
8) J. K. Rowling was born ____ 1965.
9) Students never go to clubs on ____ Mondays.
10) When we were on holiday, I always ran at the seashore ___ sunrise.