英语练习题There're different k___ of animals in the zoo.We can se

英语练习题
There're different k___ of animals in the zoo.We can see the keepers give them food to e___.They don't have to f___ food by themselves.They just eat,walk ang sleep a___ day.So many of us may think the animals in the zoo are h___ and lucky.But most of them are sad.Why?They are no longer f___.
Animals like elephants,monkeys and tigers usually live freely and happliy in forests or mountains.Tigers,for e___,run,jump,play ____ their children and catch small animals for food.Their life in the zoo is quiet d___ from their life in the forests.