题干
It's very important _______ us ______ every day.
A：for;exercise
B：to;to exercise
C：for;to exercise
D：to;exercise
答案(点此获取答案解析）
C
It's very important _______ us ______ every day.
A：for;exercise
B：to;to exercise
C：for;to exercise
D：to;exercise
