I think one of the posts which best shows my english level (apart from the oral presentation) are the last ones I did about Shakespeare.
In my opinion it's not really usefull (in my case) to do writings about whatever you want because you can write about something with an easy vocabulary and structure, and if you do something wrong most of the times you don't even know it because the teachers can't correct it once you posted it.
The writings which were usefull are the news and the reviews I think, because somehow they limitate what you can write about.
Finally, I have to say that the activities which I enjoyed the most were the ones about the book review (it was my highlight of the year). They were the ones which were a bit difficult but also the ones I found most interesting.
Have a nice summer Lourdes! ;)
