1. we /keep/our bodies/warm/avoid/flu/a cold.

We should keep our bodies warm to avoid flu and a cold.

2. you/not/phay/more/computer games/free time.

You should not play more computer games in your free time.

3.vitamins/play/important/role/our diet.

Vitamins play an important role in our diet.

4.getting/enough/rest/help/you/concentrate/sclool.

Getting enough rest helps you concertrate on school.

5.dortor/asking/huy/questions/about/health problems.

The doctor is asking Huy some questions about hiis health problems.