Do you know? April 22nd is World Earth Day. It tells us we should love the earth. Protecting environment is very important. We should be green(环保的). We can keep our bottles and take them to the bottle bank(瓶子回收站). We should have a black bin and a green bin at home. One for general waste and one for recyclable waste. We can use cloth bags and paper bags when we go to the supermarket. We should go to school on foot or by bus every day. More and more people live a low—carbon life.

    Today is Sunday. Bob goes to the zoo with his friends. He climbs up the wall to see the tigers and lions. A zookeeper shouts at him, "Don't do that. It's dangerous." He tries to touch the bear in the cage. A zookeeper shouts, "Don't touch it. It is dangerous." He wants to catch the ducks in the pool. A zookeeper shouts, "Stop! It's dangerous." Bob comes back home sadly. His mother asks him, "How's the zoo today?" Bob says, "It's no fun. Everything is dangerous!"

    Mammals have warm blood. Mammals are covered with hair or fur. Mother mammals feed milk to their babies.

    All birds have feathers. All birds have two wings. Mother birds lay eggs. Reptiles have cold blood. All reptiles have scales. Mother reptiles lay eggs. Most reptiles have four legs. A snake is a reptile with no legs.

    All insects have six legs. Mother insects lay eggs. Most insects can fly. Most insects have wings.

    Tomorrow is Sunday. It will be sunny and warm. We are going to have a picnic. I will bring some fruit and biscuits. Xiaomei will bring five bottles of water. Dongdong will bring his basketball. We will play basketball together. We will have a good time.

    Bill is a healthy and happy boy. He is eleven years old now. He likes doing sports. He didn't have any homework to do when he was five years old. He liked riding a bike. He rode a bike every evening after dinner on the playground. But now he seldom rides a bike, he likes playing football. He is very good at it. He often watches football matches on TV when he is free. He has lots of homework to do, but he can finish his homework well and quickly. So he can have much time to play football with his friends and his father.