Question

9.  ―What are you busy doing these days?

―    the College Entrance Examination.

A. Preparing for     B.  To prepare for

C. To be preparing for   D.  Prepared for

Answer 1

9.    A考查省略句。句意："这些天你在忙什么？""准备大学人学考试。"be busy doing忙于做某事；这里答语是省略句，完整的是：I am busy preparing for the College Entrance Examination.故选A。