When you have some time left you can further improve your reading skills with one of these short articles. Reading is always a good way to expand your vocabulary and your grammatical knowledge.
These articles come with a couple of multiple choice questions as well as some open questions. The answers to the questions are included in the document to enable you to check your own work. When you read one of these articles, keep a list with difficult words to actively enlarge your vocabulary.
Choose a topic you like and have fun!