water is covered （covering）about seventy percent of our eart

water is covered （covering）about seventy percent of our eart About seventy per cent of our earth( )by water Ais covering about seventy percent od our earth ___by water About——percent of the earth'ssurface is covered with water About seventy per cent of our earth _____by water. (About two thirds) of the earth is covered with water. () from space,the earth,with water () seventy percent of its 初中英语About seventy percent of the students _______in playing About seventy percent of the students _______in playing comp about seventy-one p___ of the earth is coveed by water. Seventy percent of the students here（ ）from the countryside Water _________ about seventy persent of the earth,s surface