【正确答案】 C

【答案解析】[听力原文]
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 hank. 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 tamed 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.

Why was it hard for the woman to find a baby sitter?