We should try to do as many things for the environment as we can.A. adaptableB. beneficia

问题补充：

We should try to do as many things for the environment as we can.

A. adaptable

B. beneficial

C. appealing

D. accessible

答案：

A. adaptable

(答案→)B. beneficial

C. appealing

D. accessible

解析：词义辨析。Adaptable适合的，适应的；beneficial有益的；appealing吸引人的；accessible可接近的，可达到的。句意：我们应该尽可能多做对环境有益的事情。所以选B。