完形填空。

A few years ago, I worked a 12-hour night shift(夜班) and got home from work.

I was on my way back home and was very tired. I   21   at a restaurant to have breakfast. Right after I placed my order, I saw a man come in. He was carrying a small backpack. He reached in his pocket and pulled out some   22  . He asked the waitress if 38 cents was   23    to buy a cup of coffee. She looked at his backpack and said, “  24  . Have a seat.” (Coffee was 50 cents a cup at the time.) It really touched me how she had tried to protect his pride and how he hadn’t asked for any charity.