题目内容：

It surprised me--every time I saw Joe, he was smiling. It didn’t______whether he had to stop at a stop light, or if he were the seventh person in______at the bank, and the service stopped just before he got there. Joe______smiled. It made me wonder why he seemed so______every day.

Having observed Joe with other people, I______something else also. Joe asked people how they were doing, and really seemed to listen to their______. If someone were hurting, he had______for him and kind words, and offered to______in any way he could.

It made me think. What if I tried to smile more? A(n)______of sorts began when I went to the grocery store. I smiled as I went up and down the aisles, and people I didn’t even______smiled back at me. Some even______! The little kid in the cart(购物车) who was giving his mother a______time saw me smile and______talking, and, you guessed it-he made a shy little attempt at a smile. The man in the handicapped(残疾的) cart______a person to reach something and I got it for him. The smile even transferred over to him, and he______me.

As I drove home, I was smiling. I______what I had just learned, and when someone passed me and gave me a(n)______, I smiled at him. He looked puzzled.

Now I know a smile is a small thing, but what if we were all to try to smile a few more times each day? I couldn’t believe how______I felt. Nothing in my life had changed,______maybe it had. What I had learned was that such a small thing could______not only my spirits, but also the spirits of those around me. So smile!

1.A. work    B. happen    C. matter    D. last

2.A. order    B. debt    C. hand    D. line

3.A. always    B. finally    C. immediately    D. seldom

4.A. naughty    B. happy    C. active    D. humorous

5.A. decided    B. judged    C. noticed    D. considered

6.A. answers    B. complaints    C. excuses    D. comments

7.A. guidance    B. respect    C. sympathy    D. protection

8.A. perform    B. attempt    C. bother    D. help

9.A. experiment    B. life    C. project    D. program

10.A. meet    B. touch    C. know    D. contact

11.A. glared    B. greeted    C. approached    D. escaped

12.A. spare    B. long    C. hard    D. great

13.A. stopped    B. tried    C. kept    D. enjoyed

14.A. persuaded    B. accepted    C. supported    D. needed

15.A. thanked    B. changed    C. encouraged    D. invited

16.A. worried about    B. thought about    C. talked over    D. looked over

17.A. gesture    B. address    C. call    D. ticket

18.A. normal    B. great    C. reasonable    D. professional

19.A. so    B. for    C. but    D. till

20.A. realize    B. admire    C. show    D. lift