What is the purpose of an introduction?

Read the sentence.our band practices on mondays at josef’s thursdays at lena’s and saturdays at my house. what is the correct punctuation

20 points plus brainlest answer if right.joe nesbo, a travelling salesman, was staying at a hotel for business. he was having a dinner meeting that night, so he decided to take a nap in the middle of the afternoon. he was awakened by a knock at the door, and then a man walked in. “oh my, i’m terribly sorry, this isn’t my room. , pardon the intrusion.” the man calmly backed out and left. nesbo got up and locked the door – something he forgot to do before his nap – and lay back down on the bed. but then he shot up in bed and called the lobby to tell them there was a burglar on the prowl. what made nesbo think that?

Isaw my future flash before me and it did not take me anytime to slow down. i need to replace the words "it did".