Now more and more people are trying _____ using plastic bags, wooden chopsticks and napkins to prote...
2022-12-31 12:39:52 42次 2014-2015学年辽宁锦州实验学校九年级下学期3月摸底月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Now more and more people are trying _____ using plastic bags, wooden chopsticks and napkins to protect the environment.
A. stop B. to stop C. stopping D. Stopped
本题链接：
