Much attention should the environment and fighting against pollution.A. be paid to protec

问题补充：

Much attention should the environment and fighting against pollution.

A. be paid to protect

B. pay to protecting

C. pay to protect

D. be paid to protecting

答案：

A. be paid to protect

B. pay to protecting

C. pay to protect

(答案→)D. be paid to protecting

解析：短语：pay attention to doing sth 注意做某事，关注做某事，题中用的是被动语态，句意：应该更多关注保护环境同污染作斗争。所以选D。