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，并在答题纸上将该项涂黑。
21．After_____ dinner he drove Mr.Richardson, an expert in medicine，to_____ Capital Airport．
A．the；a B．a；the C．不填；a D．不填；the
22．You’d better not call me between 3:00 pm and 5:00 pm, for I an important examination then.
A．will have B．would have
C．will be having D．will have had
