第一部分语言知识运用
第一节   单项填空（共15小题，每小题1分，满分15分）
Mrs. Hanson, a housewife bent on getting ________ higher education, has been going to college, a few courses at ________ time, for 7 years.

A．a; a

B．不填; the

C．the；a

D．不填；不填