It’s important exercise every morning.A. to takeB. takingC. takesD. to taking

问题补充：

It’s important exercise every morning.

A. to take

B. taking

C. takes

D. to taking

答案：

(答案→)A. to take

B. taking

C. takes

D. to taking

解析：考察强调句式。It is adj to do sth做某事怎么样。It做形式主语指代下文不定式内容，每天参加锻炼很重要。故选A。