Well, so far I've answered every question correctly. If you would search your heart and share with me your secrets to getting a completion certificate without going six hours of torture, I will refrain from making a comment about your "DD" sign off.
P.S. Your initial comment isn't possible. It just isn't.
I didn't have a time limit - so, this might not solve that problem - but...
I copied and pasted each chapter into a Word Document.
When I took the quiz at the end of each chapter, I would use the Word Find function to search for the answer to the questions.
Worked for me - I got 100% on my test. And, I didn't read a word of that garbage.
;-)
"DD"