用所给词的适当形式填空。

1. Everyone wants _______ ( achieve) his or her dream.

2. I think Zhang Renjie is much________( realistic)  than us.

3. Wang Baoqiang tried his best to perform and he__________( success) in the

end.

4. What are the rules that a teenager should __________( obey) ?

5. Most people come to realize the________(important) of protecting the earth.