This is the new written assignment to cover the vocabulary and grammar seen in this block of content. Before the assignment, it's convenient to practice the layout. To this end, you can find some practice in the handout I gave in class and in the link below.
Assignment
Write a complaint letter/email (125-150 words)to show your dissatisfaction with a recent purchase. Choose the product and make up the problems you have had. You can take the samples as models. Use linking words, appropriate vocabulary (shopping, business, money) and as many possible grammar structures of this level as possible. Deadline Monday 13th May (5ºB) / Tuesday 14th May (5ºCAL)
Practice
Find the key to all the exercises here
Key to practice
In addition, have a look at some PUC writing tests with complaints. No.2 is quite similar to some of the practice above, isn't it?