题目内容：

阅读下面短文，从短文后所给各题的四个选项中，选出可填入空白处的最佳选项。

I was having my dinner at McDonald’s one evening when an old couple slowly walked in. They _______ their meal, took a table near the window and started _______ food out of the plate. There was one hamburger, one order of French fires(炸薯条) and one drink. The man ______ the food into two halves and carefully placed _______ before his wife.

    He took a sip(一小口) of the drink. His wife also took one and then _____ the cup down between them. “That _______ old couple! All they can ______ is one meal for the two of them,” thought I. _______ the man began to eat his French fires, I ______ to my feet, went over and said that I was _____ to buy another meal for them. But he ______ refused me and said that they made it a _____ to share everything.

     ____, the lady didn’t take a bite. She sat there _____ her husband eat, and taking turns sipping the drink. Again I _____ to buy them something but was refused. When the man finished eating and was ______ his face with a napkin. I _____ no longer stand it. I made an offer to them a third time. _______ being politely refused, I asked the lady ____, “Madam, why aren’t you eating? You said that you share everything. ______ is it that you are waiting for?” “The teeth,” she answered.      

1.A. served   B. requested   C. collected   D. ordered 

2.A. carrying  B. taking    C. fetching   D. bringing 

3.A. divided         B. cut    C. changed   D. formed 

4.A. it    B. this    C. that    D. one  

5.A. got    B. settled    C. set    D. torned 

6.A. funny   B. crazy    C. strange   D. poor 

7.A. afford   B. pay    C. demand   D. choose

8.A. While   B. Since    C. As    D. Until 

9.A. came   B. struggled   C. rushed    D. rose 

10.A. anxious  B. willing   C. satisfied   D. quick

11.A. warmly  B. proudly   C. kindly    D. seriously

12.A. way   B. habit    C. case    D. model

13.A. Surprisingly B. Sadly    C. Shockingly   D. Bitterly

14.A. seeing  B. noticing   C. watching   D. finding

15.A. wanted  B. asked    C. planned   D. attempted

16.A. wiping  B. touching   C. bathing   D. washing

17.A. should  B. could    C. might    D. would

18.A. In         B. Upon         C. After    D. With

19.A. curiously      B. carefully   C. naturally  D. plainly

20.A. How   B. Who    C. Why      D. What