Look at this blue p_______.This is our home .There are plains ,m_____,r_____,lakes and o____on it.There are all k____of trees, flowers and g____on it.There are all kinds of wild animals l_____together with us.Son't you want to keep our planet b_____?But sometimes we do bad t______to it.We w______too much water.We cut down too many t____.We hunt too many shouldn't do these things.We should s____ our planet b____we have only one planet.