We will visiti our family ______ summer
IN
I have math classes ________ the morning
IN
The break will start ____ ten minutes
IN
Her birthday is ______ July 26th
ON
I go to ballet ____ Mondays
ON
Life was difficult _________ the 1940s
IN
We celebrate Halloween _____ October 31
ON
Christmas is ______ December
IN
The World War II started ______ 1939
IN
I wake up _____ 6 am
AT
The movie starts ____ 13:30 pm
AT
The Titanic sank ______ 1912
IN
Come and visit me ______ Thanksgiving
AT
I will go to the beach _____ Sunday
ON