根据句意,用括号内所给词的适当形式填空。
1. Some friends have opposite views and _______ (interesting).
2. Please write an _______ (invite) letter to your pen friend.
3. Pedro is _______ (funny) than Paul.
4. —Where is the _______ (swim) pool?
—It's over there.
5. Don't _______ (worried) about your Chinese. We can help you.