I hit the punching machine with my fist. And I got aching because I hit it wrong, and I took a break.I saw a mythical creature by the river while I was exercising.
Hi Eric,
Thanks for doing your homework.
I wish I would be able to see a mythical creature too! 
I hit the punching machine with my fist.
>> CORRECT!
And I got aching because I hit it wrong, and I took a break.
>> It was painful because I hit it wrong that is why I had to take a break from school.
I saw a mythical creature by the river while I was exercising.
>> CORRECT!