【 】is good for your health A ,Walk B,walking C walk D【 】is good for your health A ,Walk B,walking C walk D towalk%D%A
问题描述:
【 】is good for your health A ,Walk B,walking C walk D
【 】is good for your health A ,Walk B,walking C walk D towalk%D%A
答
B,应该是动名词