The classes start ___ 8:40 a.m.
at
I love going shopping with my family _____ Saturdays.
on
She was born _____ 2009.
in
Will you come to school _____ Wednesday?
on
The schools start ____ September, and end _____ June.
in / in
We love eating hotpot ____ winter.
in
I have tennis course ______ the afternoon.
in
We celebrate New Year _____ December 31st.
on
