题目内容：

On a recent trip to California, I was introduced to Smile Cards. I promised myself to _______ an act of kindness before I lelt California. I _______ thinking about it but I didn’t know what to do.

I reached the airport and the _______ was about to begin when I saw an ice-cream store. I went in and told the guy at the store that I _______ to do an act of kindness. The guy, named Jose, looked confused. _______ I explained I had just attended a conference, where I was told Smile Cards and  _______ to do an act of kindness. Jose showed _______. I told Jose, “Whoever is your next _______ , treat them to some ice-cream and then give them this Smile Card.” Jose _______ read the card and agreed with a smile that was both grateful and  ________ at the same time.

Since this was my first time, I wanted to know the ________ of the receiver. “Jose, I have to catch a ________ , but here is my cell phone number. Would you be ________ enough to call me and tell me the person’s reaction?” He ________ .

I went to my gate, and as I was about to board, Jose ________ . “I did the act of kindness. The person was very ________, and asked me to express thanks to the person who paid for them!” I again thanked Jose and boarded the flight feeling ________.

I really want to ________ this practice of kindness. I am a professor and I love my work ________ it makes a difference in the lives of others. And now, I realize that I can do that everywhere. The whole world is my ________ .

1.A. do    B. find    C. prove    D. explain

2.A. practised    B. enjoyed    C. tried    D. kept

3.A. checking    B. boarding    C. shopping.    D. booking

4.A. managed    B. chose    C. wanted    D. forgot

5.A. Then    B. Again    C. Yet    D. Anyhow

6.A. forced    B. ordered    C. allowed    D. encouraged

7.A. anger    B. interest    C. satisfaction    D. delight

8.A. visitor    B. waiter    C. customer    D. friend

9.A. curiously    B. calmly    C. politely    D. nervously

10.A. annoyed    B. tired    C. frightened    D. confused

11.A. reply    B. reaction    C. expression    D. decision

12.A. bus    B. train    C. flight    D. taxi

13.A. kind    B. brave    C. wise    D. shy

14.A. refused    B. agreed    C. succeeded    D. failed

15.A. arrived    B. shouted    C. appeared    D. called

16.A. happy    B. active    C. special    D. clever

17.A. safe    B. lucky    C. proud    D. energetic

18.A. introduce    B. describe    C. explore    D. continue

19.A. once    B. because    C. if    D. though

20.A. homeland    B. battlefield    C. playground    D. main-road