Thewaterandthelandar的精选

问题详情：完形填空Thewaterandthelandarethoughtpartoftheearthsurface(表面).Theairis  1  thoughtakindofblanket  2  theearth.Butitis  3  thanthat.Maybeyouhavebeeninacave(洞穴)  4  intheeart...