PET Free Course Online (B1)

This blog offers the PET course which is the "Preliminary English Test" of Cambridge University and it is equivalent to your course (3rd Year at the Official Language School). Both have the B1 level, so a very good way to practice and study for your final examination is to do it. You only have to click on the title of any of the 15 units of the course and follow the instructions. There are many interesting links and exercises.