用所给单词的正确形式填空。

1. Would you like to ask Mr. Hu for some _____? (建议)

2. I think diving is more _____ than skating.(令人兴奋的)

3. Why do you look so _____? Can I help you? (紧张)

4. You must know that different people have different _____ (能力).

5. Do you think what he said is _____? (真实的)