The hens lay eggs.

母鸡下蛋。

同一单元的其他句子

• The cow is eating grass.奶牛正在吃草。
• Are the pigs sleeping?猪在睡觉吗？
• I see a big red barn.我看见一个红色的大谷仓。
• Don't feed the animals.不要喂动物。
• How many sheep are there?有多少只羊？