完形填空(共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后各题的A、B、C、D四个选项中，选出适合填入对应空白处的最佳选项，并在答题卡上将该项涂黑。
I was having my dinner at McDonald’s one evening when an old couple slowly walked in.They   21  their meal,took a table near the window and started   22  food out of the plate.There was one hamburger,one order of French fries(炸薯条) and one drink.The man   23  the food into two halves and carefully placed   24  before his wife.
He took a sip(一小口) of the drink.His wife also took one and then   25  the cup down between them.“That   26  old couple!All they can   27  is one meal for the two of them,”thought I.   28  the man began to eat his French fries,I   29  to my feet,went over and said that I was   30  to buy another meal for them.But he   31  refused me and said that they made it a   32  to share everything.
_____33_____,the lady didn’t take a bite.She sat there   34  her husband eat,and taking turns(轮流) sipping the drink.Again I   35  to buy them something but was refused.When the man finished eating and was   36  his face with a napkin(纸巾),I   37   no longer stand it.I made an offer to them a third time.   38  being politely refused,I asked the lady   39  ,“Madam,why aren’t you eating?You said that you share everything.     40     is it that you are waiting for?”“The teeth,”she answered.
21.A.served                  B.requested            C.collected                   D.ordered
22.A.carrying               B.taking                C.fetching                    D.bringing
23.A.divided                 B.cut                     C.changed                    D.formed
24.A.it                        B.this                    C.that                           D.one
25.A.got                       B.settled                C.set                            D.turned
26.A.funny                   B.crazy                 C.strange                      D.poor
27.A.afford                  B.pay                    C.demand                     D.choose
28.A.While                   B.Since                 C.As                            D.Until
29.A.came                    B.struggled            C.rushed                       D.rose
30.A.anxious                B.willing               C.satisfied                    D.quick
31.A.warmly                B.proudly              C.kindly                       D.seriously
32.A.way                            B.habit                  C.case                          D.model
33.A.Surprisingly          B.Sadly                 C.Shockingly                D.Bitterly
34.A.seeing                  B.noticing             C.watching                   D.finding
35.A.wanted                 B.asked                 C.planned                     D.attempted
36.A.wiping                 B.touching             C.bathing                            D.washing
37.A.should                  B.could                 C.might                        D.would
38.A.In                        B.Upon                 C.After                        D.With
39.A.curiously                     B.carefully            C.naturally                   D.plainly
40.A.How                    B.Who                  C.Why                         D.What