Dear Allan,

In the middle writing for the last question(#18) of the mid-term test, the test was submitted. I must have lost the track of time focusing on writing the lesson plan.

I am submitting the full answer to question 18 in the comment below. I could also have added the un-submitted part, but for your convenience, I thought putting the full answer might be easier for you to mark.).

So sorry for the inconvenience that I caused you.

Thanks always.