It has been proved that taking exercise does good to one’s health.A. mostlyB. formallyC.

问题补充：

It has been proved that taking exercise does good to one’s health.

A. mostly

B. formally

C. regularly

D. publicly

答案：

A. mostly

B. formally

(答案→)C. regularly

D. publicly

解析：本题考查副词。mostly主要地; formally正式地; regularly有规律地；publicly公开地。根据句意：已经证明有规律地运动对健康有益。故选C。