1）Susan usually studies too late at night. Her eyes often feel tired. Sometimes she cannot see the blackboard clearly.

2）Tim is a sports lover. He does sports for a long time every day. He always feels tired and sleepy in class.

3）Linda is a little thin and short. When she stays with her classmates, she looks small. She always worries about it.

4）Harvey often catches a cold and cannot sleep well at night. This makes him feel bad and can't focus in class.

5）Marie has a cough. These days she coughs day and night. And sometimes she has some trouble with her teeth.

A. Tomatoes.

Tomatoes are rich in vitamin A, C and D. Eating tomatoes is good for your stomach. They can make you look young and beautiful.

B. Green vegetables.

Green vegetables are rich in antioxidant（抗氧化素）. It is good for the eyes and helps to ease tiredness. To keep your eyes healthy, you can have more green vegetables.

C. Apples.

People usually say one apple a day keeps the doctor away. If you eat apples or drink apple juice every day, you will not have a cold so easily. Also, it helps to improve your sleep and study.

D. Pears.

Pears are mainly healthy for the lung（肺）and the teeth. When you have a cough or have something wrong with the teeth, having more pears may help.

E. Bananas.

Bananas are rich in potassium(钾元素). Potassium will be lost after doing sports for too long. So, eating more bananas can give you energy and make you not feel so tired and sleepy.

F. Oranges.

Oranges are not only tasty but rich in vitamin C. Vitamin C is helpful for kids to grow taller. You can eat oranges or drink orange juice every day.

G. Garlic(大蒜).  

Garlic can kill some kinds of viruses and stop them going from people to people. When you have a cold, you may carry a small bag with some garlic in it.