ABOUT prepositions

i don't know!! please help

1. The sound was heard all _____ the house.
2. Thes three boys divided the marbles_______ themselves.
3. She plays a piece of music________ the piano.
4.This part of the road is well known________accident.
5.The old woman baked a cake _________ her grandson.
TODAY is 3rd October. The weather is fine. It seldom rains ________ October. I am going ______ a picic with my friends. We will set ________ at about 8 O'clock _______the morning.

THX THX THX