He plays golf --- the weekend.
AT
She is never late. She is always --- time.
ON
My birthday is --- 21st of October.
ON
I'm busy --- weekdays.
ON
The bus will come --- 10 minutes.
IN
You should brush you teeth --- eating.
AFTER
Bats fly --- midnight and sleep --- noon.
AT, AT
He reads books --- the morning, --- the afternoon, --- the evning and --- night.
IN, IN, IN, AT
They go to school --- Monday --- Friday.
from, to
The trees bloom --- spring.
IN
She always finishes her work --- four o'clock.
AT
They are out of work --- the moment.
AT
He surfs --- summer.
IN
This armour was made --- the 14th century.
IN
He works --- 9 --- 5.
FROM, TO
People will go to other planets --- future.
IN
People watch fireworks --- New Year Eve,.
ON
You must wash your hands --- eating.
BEFORE
She usually does the shopping --- Saturday.
ON