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 left 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 (会议), 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.find B.prove C.do D.explain

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

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

4.A.wanted B.managed C.chose D.forgot

5.A.Again B.Anyhow C.Yet D.Then

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

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

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

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

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

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

12.A.bus B.train C.taxi D.flight

13.A.brave B.wise C.kind D.shy

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

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

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

17.A.proud B.safe C.lucky D.energetic

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

19.A.once B.if C.though D.because

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