A、Walking. B、Running. C、Riding a bike. D、Wrestling. D

Many people today like to exercise. Some like to run, and some like to walk. Others dance or play balls. And some people do more than one kind of exercise. Why do people like to do exercises? [26] It makes them feel good. And exercise helps make them tired, so they sleep better at night.
   You may like to [28] run. If you do, take care of your feet. One way you can do this is by [27] making sure you have the right shoes. Some people like to run around running tracks. Many high schools have these tracks.
   [28] Walking is a fine exercise. You may wish to take a long walk in the park. It’s more fun if you don’t go alone. Go with a friend. The two of you will have a great time. You will get a lot of exercise, too. [27] For walking, like running, make sure you have the right shoes.
   Some people like to swim. But others do not like going into the water. If you like this kind of exercise, make sure someone is watching you. You must always take care when you are in the water.
   Jumping rope and [28] riding a bike are other fine exercises. There are many more.  Find one that you like.  You may need help at first.  So ask someone. People who have been doing the exercise for a long time can help you. Get started today. You’ll like how exercise makes you feel.