Ⅰ、1、 not to phone him anymore
2、 to drink plenty of water and have a good rest
3、 feel much better
4、 are mentioned
5、 form good studying habits
Ⅱ、
Ⅲ、
Ⅳ、One possible version :
How to Keep Healthy
As we all know, health is very important. But how to keep healthy?Firstly, we should have a healthy,balanced diet. Eat more fresh fruits and vegetables but less junk food.Secondly, take enough exercise. It's good for us to do more exercise,such as running, walking and playing ball games. Thirdly, we need to have enough sleep. Try to sleep for more than eight hours every day. At last,we should learn to get along well with people around us. We can share our problems and happiness with them. To keep healthy is not difficult if you care about it a lot.