—The cars give off a great deal of waste gas in the street.
—Yes, But I’m sure something will be done to air pollution.
A. reduce
B. remove
C. collect
D. warn
网友回答
(答案→)A. reduce
B. remove
C. collect
D. warn
解析：动词词义辨析。A减少；B去除；C收集；D警告；句意：—街上的汽车发出了很多的废气。—是的。但是我确定一定会采取措施来减少空气的污染。根据句意说明A正确。