Fill in the blanks with preposition or adverbs wherever nevessary

(B) Peter, a thirteen-year-old boy, sat - on a big chair - in  front - of the TV screen. His mother wasn't - at home, so there was nobody who would tell him what he could and what he couldn't watch. He was glad not to be - in  bed - until/at  11 o'clock. When the television advertisements were - on, Peter closed his eyes and thought - to himself as one - of the large unshaven men - with pistols, walking slowly - through a dark stairway towards the door - behind which, everybody knew, the Boss was waiting. - In/after a few minutes Peter knew, the ads would be over, so he had just enough time to go - to the kitchen and get something nice - from the refrigerator. - In the kitchen he did not put - on the light and it was strange to see how the kitchen looked - in the dark when nobody else was - at home.