A. If you are really interested in painting, you should tell your parents about it. You can tell them you will do much better in painting because "Interest is the best teacher".
B. I think you should eat less meat but more fruit and vegetables. And you should do exercise every day. It can help you lose weight and keep you healthy.
C. It is not easy to make a friend, and it is even harder to keep friendship. You should know that it is normal(正常的)for friends to argue with each other. I think you could have a talk with your friend and find out what's going wrong.
D. Why not try your best to take more exercise? It's good for your health. If you are strong enough, the illness will be away from you.
E. A good way to remember English words is to use them often. For example, you can read English stories every day. If you do this, you can remember English words much easier.