Get as far in Grammar101 as you can in 40 minutes between today and Thursday and e-mail me all of your results at email@example.com.
Do us all a favor and avoid searching for the bottom, here. If you can burn through 25 of these with only a handful of mistakes in 35 minutes, I want you to do it, and I want to give you full credit for doing your best.
However, if you are truly struggling and it takes you 30 minutes to get one nearly perfect score, so be it. When I see evidence that you are goldbricking or failing to using your time well, you will be doing these modules with me after school.
Quick reminder of how to e-mail me results:
Click "print"; click "PDF"; click "save as PDF"; make sure you are in "Documents"; name your document <name> <lesson #> and make sure the author has your name in the window.
Compose an e-mail to me w/ subject heading Grammar 101; attach your PDF document(s); send.