It’s necessary for you exercise every day.A. takingB. to takeC. takeD. takes

问题补充：

It’s necessary for you exercise every day.

A. taking

B. to take

C. take

D. takes

答案：

A. taking

(答案→)B. to take

C. take

D. takes

解析：考查固定句型：it’s+形容词+for sb to do sth表示对某人来说做某事怎样，it是习惯是主语，不定式是真正的主语，句意：你有必要每天锻炼。选B。