Ⅱ. Teenagers’ future plans.
According to a study by WHO, only 5% of the people in the world are really healthy, 20% of people are sick, and 75% are sub-healthy（亚健康的）. Most unhealthy people don’t get enough exercise. It is a very important reason. How should we exercise?1
Make a plan
2 Having a plan helps us know what to do each day, and it can let us have a clear goal. It’s best for us to exercise twice a week. Each exercise time doesn’t need to be too long. 3 And also, make sure our plan is practical（适用的）. If we never run for a long time, don’t run for thirty minutes a day during our first week of exercise. We should increase（增加） the time of it little by little.
4
Walking is a good way for beginners. We can take a walk every day. It can improve our sleep. ______ 5 ______ It is an easy way for people to exercise, and we don’t need to choose any special time and places to walk.
In a word, exercise is a good way to keep fit. Besides, we can also do it according to our own hobbies, such as playing some ball games.
A. It can also make our body strong.
B. Thirty minutes is enough.
C. Increase our walking time
D. Write down our exercise plan.
E. Choose a good place to exercise
F. Here are two ways to help you exercise better.
1. 2. 3. 4. 5.

1.E 2.D 3.A 4.C 5.B