根据句意，用括号内所给单词的适当形式填空。

1. My grandfather wants to live in a place which is _____ (peace) than here.

2. Male _____ (wolf) will protect their families if there is danger.

3. The dolphins were really tired because of the long _____(perform).

4. If farmers keep _____(take) the land, giant pandas will have nowhere to live.

5. Hunters will make a lot of money if they sell _____(elephant) tusks.