第二节：完形填空
阅读下面短文，掌握其大意，然后从21 ~ 40各题所给的四个选项(A、B、C、D)中，选出最佳选项，并在答题纸上将该选项标号涂黑。
Years ago, I drove into a service station to get some gas. It was a beautiful day, and I was feeling great. As I walked into the station to ___21___ the gas, the owner said to me, "How do you feel?" That seemed like a ___22___ question, but I felt fine and told him ___23___.
