Как правильно писать: his friens live или lives in the forest. dogs like или likes meat ans milk. the farmer drink или drinks juice in the morning. birds eat или eats corn.

3 лицо ед число ( он, она, оно) добавляем к глаголу окончание s. 

His friends LIVE или LIVES in the forest.
Dogs LIKE или LIKES meat ans milk.
The farmer DRINK или DRINKS juice  in the morning.
Birds EAT или EATS corn.