A、The children were very naughty. B、They lived in the countryside far away from other people. C、They had moved to a new town and

I have four small children, three girls and one boy. I don’t go out very much because it’s hard for me to find someone to look after them. Any time I do go out, I have to find a baby sitter. It’s not easy for me to find a baby sitter because we have just moved here. Since we’re new in town, I don’t know very many people yet.
    Well, one Friday morning I looked in my purse and found that I had only two dollars left. I still had to do that week’s grocery shopping. There was nothing else I could do; I had to go to the bank. I hoped that Rachel, my next-door neighbor, could come and baby-sit for me, but she wasn’t home. So after the children were all dressed, off we went to the bank.
    After we’d all got into the car, I tried to relax a little as I drove to the bank. The children were very noisy from the start. They were yelling and crying and picking on each other. By the time we arrived at the bank, I was very angry.
    The bank was very crowded. I don’t think I’d ever seen so many people there at once. I think, since it was the end of the month, it was payday for most people.
    Anyway, the children were still acting up, and I was still pretty angry with them. I turned around to try to keep them quiet and shouted, "Stand against the wall and don’t say a word!" Everyone in the whole bank stopped talking. They thought it was a hold-up.
Questions 21 to 24 are based on the passage you have just heard.
21. Why was it hard for the man to find a baby sitter?
22.Why couldn’t Rachel, his next-door neighbor, baby-sit for him?
23.How did the man feel when he arrived at the bank?
24.What happened when the man shouted at his children?