Question

The teachers are busy_______ heir lessons, while the students are busy ________the examination.

A. preparing; prepare for　　　 B. preparing; preparing for

C. to prepare; to prepare for　　 D. preparing for; preparing for

 

Answer 1

B

prepare lessons是指“老师备课”，prepare for the examination指学生“准备迎考”。Be busy doing sth表“忙于做某事”。