will be good for you to spend one hour exercising outdoors every day.A. ThatB. ThisC. It

问题补充：

will be good for you to spend one hour exercising outdoors every day.

A. That

B. This

C. It

D. One

答案：

A. That

B. This

(答案→)C. It

D. One

解析：考查代词辨析。本题考查的是It作为形式主语，后面的不定式为真正的宾语。故选C。