Prepositions of time start

at
in
School starts __ 8 o`clock

in
on
Children play __the park every day

in
at
We get up __ the morning

-
in
I plan to travel __ this year

on
in
She has English __ Tuesday

at
in
They usually sleep__night

-
in
I saw my friend __ last year

in
on
He has birthday __March

at
in
They usually meet friends__weekend