Whether ways will be found to stop pollution or not is just worries the public.A. whyB. w

问题补充：

Whether ways will be found to stop pollution or not is just worries the public.

A. why

B. which

C. that

D. what

答案：

A. why

B. which

C. that

(答案→)D. what

解析：本题为what引导的表语从句，从句中缺少主语，所以用what。