用所给单词的适当形式填空
6. Hainan is in the ________(south) part of China.
7. We all support his ________(science) research.
8. This is an ________(danger)animal. We should try to save it.
9. Smoking is ________(harm) to your health. You must give it up.
10. Tom is ________(strong) in our school.