写出单词的正确形式。

1. We are writing to you about ___________(保护) wild animals.

2. If farmers _________(继续)to make new farmland, wild animals won't get enough food.

3. His job is            (喂)animals.

4. You can know the weight of the apples after            (称重量) it.

5. Hunters will make a lot of money if they sell __________(大象) tusks.