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(训
练)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.