用所给词的适当形式填空。

1. She was _______ (bad) hurt when she fell off the tree.

2. I hope you will _______ (cover) soon.

3. He has been one of Dr. Clarks' _______ (patient) for many years.

4. The teacher walked into the class so _______ (quiet) that no one noticed him.

5. Comrade Lei Feng has been ______ (die) for many years.