We are having lunch ..... National Day. (at / on / in)
on
My appointment is ....... Monday. (at / on / in)
on
I like watching television ....... night. (at / on / in)
at
I listened to birds chirping ....... breakfast time. (at / on / in)
at
Classes start ..... 10 am. (at / on / in)
at
We have too much snow ..... winter. (at / on / in)
in
The baby was born ...... 2009. (at / on / in)
in
I always drink tea ....... the afternoon. (at / on / in)
in
We celebrate graduation ...... November 25th. (at / on / in)
on