What do koalas eat Why do you eat Where are elephant and gir

what do koalas eat?(树懒吃什么?)
koalas eat leaves and fruits.(树懒吃树叶和水果)
what do you eat.(你吃什么?)
I eat rise (我吃米饭)
where are elephant and giraffrs from?(大象和长颈鹿从什么地方法来?)
They are come from great glassland.(他们来自大草原.)
我认为大象和长颈鹿是生活在大草原(great glassland)里的而不是森林(forest)里.
动物世界里是这么说的呵呵