Question

【题目】If you want to be a green person, you ought_____energy and _____air pollution.

A. to save, reduceB. saves, reducesC. saved, reducedD. saving, reducing

Answer 1

【答案】A

【解析】

句意：如果你想要成为一个环保的人，你应该节约能源，减少空气污染。ought to do sth应该做某事，故第一空为to save。and前后并列，故第二空用动词原形reduce。故选A。