我的祖父母在他们的花园里养了几只鸡。

My grandparents ___keep a few chickens in their garden.

我认为把大型犬养在小公寓里是不公平的。

I don't think it's fair to ___keep large dogs in small flats.

他们在农场里养牛，以获取牛奶和牛肉。

They ___keep cows for milk and beef on their farm.