Let's go to the cinema ___ Friday.
on
My birthday is ___ May.
in
The leaves fall of the trees ____ autumn.
in
They landed on the moon ____ 1969.
in
Most people sleep ____ night.
at
School begins ____ 8 o'clock.
at
___ dinner I go to the bed.
after
I have lessons _____ 3pm.
till/until
I can watch TV ____ the weekend.
at
I brush my teeth ____ sleeping.
before
