This year since we need to continue learning right up to the exam..... the review will be online. You have many options;
- leave an answer in a comment at the Mathzone Post
- create your own blogpost and use the label examreview
- do the question on paper and tak a phot and upload it to your blogpost or... just do it on paper.
The problem solving on the exam requires you to do math writing. Do not shy away from using words to explain what you are doing.