It's time for you to master your animation data!
Take one of your previously animated exercises and apply that animation data to a different object.
This will be easier if it's an animation that was created on the object level (Loc, Rot, Scale), and is not an armature animation.
And if that object is a different shape than the original exercise (eg - if it was a cube, try a monkey)
Offset the animation on a channel that wasn't previously animated (or figure out what channel can safely be deleted if you animated on all channels in the previous exercise).
Then split your animation data into a seperate action and edit the animation on a channel that was previously animated.
You should have 2 object in your submission with these 2 differing actions.
Don't worry, that only sounds like it's difficult.
I have used the 'Square in Square' exercise data in this example, but you are free to use whatever data you wish, as long as you can complete the exercise with it.