Playing football and climbing are than watching TV.A. more healthyB. more healthier C. muc

问题补充：

Playing football and climbing are than watching TV.

A. more healthy

B. more healthier

C. much more healthier

D. much healthier

答案：

A. more healthy

B. more healthier

C. much more healthier

(答案→)D. much healthier

解析：句意：踢足球和爬山要比看电视更健康。因为句子中有标志词than，所以应该用形容词的比较级，healthy的比较级是healthier，much在这里修饰形容词的比较级，表示程度的加深。