Do your intermediate students still make simple errors even they are able to make complex sentences with comparative and superlative structures? Then, this worksheet may help them to realize their mistakes in comparison sentences. It includes typical mistakes my intermediate students do in my lesson.
The worksheet is cut into halves as C and S (to consolidate the pronunciation of C and S letters) worksheets. Just distribute the worksheets to pairs and then ask the pairs swap each other's worksheets to check. They learn more from correcting their partners.