A. I think it's a bad habit. Taking a walk after meals is good for us to keep healthy.

B. It's important to protect (保护) our teeth. Eating too much candy is bad for our teeth and health.

C. We can see the colorful world by watching TV with our eyes. But we should protect our eyes carefully. We should let them have a rest after watching for one hour.

D. Many people died from smoking (烟). Smoking brings us serious hurt.

E. The food there tastes good, but I think it's junk food. We should take care of our eating habits and eat more food with vitamins and less meat.