Question

【题目】To keep healthy, I for one hour in the afternoon.

A.am exercisingB.exerciseC.am doing exercisesD.do exercises

Answer 1

【答案】B

【解析】

句意：为了保持健康，我下午锻炼一个小时。

考查动词用法及时态。am exercising正在锻炼；exercise锻炼；am doing exercises正在做练习题；do exercises做练习题。根据“To keep healthy”可知，做的是体育锻炼，而后半句“in the afternoon”可知，时态是一般现在时。故选B。