with house is animals Some peopel friends dogs help do
Animals are our______.We can find different kinds of______on the earth.
______animals are living in big forests.And some animals are living_____man.
Animals are very important（重要）to man.For example,_______can train（訓(xùn)
練）the elephants to______some heavy work.And they can also train the dogs
to look after the_______.A watchdog______very clever,it can______people
in danger.
Children like ______very much.