Fill in all the gaps, then press "Check" to check your answers.
That is
These are
This is
Those are
a rabbit.
That is
These are
This is
Those are
frogs.
That is
These are
This is
Those are
horses.
That is
These are
This is
Those are
a hen.
That is
These are
This is
Those are
a mouse.
Check
OK