田地里长满了成熟的玉米。

The fields were full of ripe ___corn.

我姐姐是农民，我们必须种植山药、玉米、豆类和其他作物。

My sister is a farmer, and we have to plant yams, ___corn, beans, and other crops.

农民经常用玉米来喂养他们的动物。

Farmers often use ___corn to feed their animals.