完形填空(共20小题；每小题1.5分，满分30分)
阅读下面短文，掌握其大意，然后从第36至第55小题所给的A、B、C、D四个选项中，选出最佳选项。
When I was young,my parents ran a snack bar in our small town.
One evening in early April,my mother told me to fill in at the snack bar   36  a worker who had the flu.I told her I would mess it up,  37 I had never worked at the bar before.I   38  
that instead of making money,I would end up owing it.
“You can do it,”said my mother.“   39  ,you won’t get much business until lunch.”
“But I’ll never remember the orders,and I’m no good___40_money.Please,Mom,don’t
   41  me.”
“Then I’ll help you,”she said.
I shrugged my shoulders.I thought my mother’s     42    was a bad one,but I      43    .
When I got to the bar the next day,I found my mother was   44  .Because the weather that day was rainy and cold,people wanted hot snacks and drinks.   45  ,I was really slow at taking the orders and making change.The line of people grew,and everybody seemed   46  .I was so nervous that my hands shook,and I    47  a cup into pieces.What a mess!Then my mother came to   48  me,and she also showed me how to make   49  .If someone gave me $5 for something that cost $3.25,I handed over  50  quarters and a dollar and said,“75 cents makes four dollars,plus one dollar makes five.”Things went more   51  after that.
By the end of the day,I could remember orders,   52  the bill,and make change quickly with a smile.I was even a little   53   when the sun came out and dried up business.My mother said she was proud of me,and when she   54  that I work at the snack bar again next year,I did not even shrug.I was too busy   55  the restaurant I would open one day.
36.A.to                        B.for                     C.after                         D.over
37.A.because                B.though               C.until                         D.while
38.A.promised                     B.noticed               C.worried                     D.hoped
39.A.Therefore             B.However            C.Besides                     D.Yet
40.A.of                        B.on                            C.about                        D.with
41.A.blame                   B.fool                   C.frighten                     D.make
42.A.idea                            B.bar                    C.day                           D.answer
43.A.guessed                B.obeyed               C.begged                      D.admitted
44.A.angry                   B.sad                    C.wrong                       D.ashamed
45.A.At least                B.At last                C.At most                     D.At first
46.A.surprised                     B.impolite             C.pleased                      D.impatient
47.A.damaged               B.destroyed           C.broke                        D.ruined
48.A.scold                    B.help                   C.beat                          D.save
49.A.money                  B.lunch                 C.coffee                       D.change
50.A.two                      B.three                  C.four                          D.five
51.A.smoothly                     B.fairly                 C.simply                      D.conveniently
52.A.turn in                  B.count out            C.take over                   D.add up
53.A.discouraged          B.disturbed            C.disappointed              D.distrusted
54.A.thought                B.stated                 C.announced                 D.suggested
55.A.imagining             B.preparing           C.examining                 D.describing