用所给词的适当形式填空。

1. Oh, I think you have put too much salt in the soup. It tastes quite      (salt).

2.     (leaf) on the trees turn yellow in autumn.

3. What's this called in English? It's a           (fly) disk.

4. The customer thought the         (potato) weren't thin enough.

5. We know the boys       (take) good care of by the nurse.