问题补充:
Since the recent river pollution in Shanxi Province , people more and more attention to the water quality.
A. pay
B. are paying
C. have paid
D. have been paying
答案:
A. pay
B. are paying
C. have paid
(答案→)D. have been paying
解析:句意:自从最近在山西省的河流污染问题以来,人们越来越重视水质量。题目中用现在完成进行时态表示动作从过去开始一直延续到现在,还有可能继续延续下去。强调动作的延续,故选D.