Question

【题目】The students are busy ________ the exams. ( )

A.preparingB.to prepareC.prepare

Answer 1

【答案】A

【解析】

句意：学生们正忙于准备考试。be busy doing sth正忙于做某事，be busy to do sth是说忙着要去做某事，这件事还没开始做呢，分析可知学生们正忙于准备考试。故选A。