Here are the correct answers for the numbered blanks in the passage:

1. A. **Do**
2. B. **water**
3. A. **good**
4. C. **bad**
5. C. **unhealthy**
6. D. **is**

So, the completed passage would read:

"How healthy are you? **Do** you have a healthy diet? Do you exercise regularly? Do you drink at least 8 glasses of **water** a day? Do you live a healthy lifestyle? We need to take care of our body. Life is beautiful and we should not keep ourselves down with **good** problems. Today, your body organs may be working well, but they may not be tomorrow.

**Health** is not just about healthy eating and enough exercise, but it is also about having a positive attitude and a healthy lifestyle. Stress is a major problem for many people. Stress happens not only in work and study, but also because of bad habits such as playing games and watching TV. When stress gets too high, it causes us to be unhappy **unhealthy**. Therefore, avoiding stress is as important as eating healthily and doing exercise regularly."