It's good ___a walk every day.a.to have b.have c.having

It's good ___a walk every day.a.to have b.have c.having
It's good ___a walk every day.
a.to have b.have c.having

It's good ___a walk every day.a.to have b.have c.having
to have
it's good to do...固定搭配

c 因为后面有every day