Peter is doing ______ in protecting the envirnment than anyone else in our class.
A.well B.good C.better（没猜错的话C应该是better,原题未显示完整）
答案：C
do well in sth /doing sth
be good at sth/doing sth
彼得现在在保护环境方面比我们班里其他任何人 都做得好.
此处有than 故用well的比较级better