第二部分:英语知识运用(共两节,满分45分)
第一节:单项填空(共15小题;每小题1分,满分15分)
       从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。
21. —Excuse me, sir, ________
   —I’d like a cup of coffee and two pieces of bread.
     A. what do you want? 
     B. may I have your order?
     C. this table is reserved.     
     D. I would like to serve you.
22. The reason for his success is ______ he worked very hard.
     A. why               B. that              C. whether          D. how
23. The bill would ______ workers twelve weeks of unpaid leave for family emergencies.
     A. permit         B. supply          C. admit            D. provide