Hey Alan, I haven't done much so far (I am in the middle of grammar module), but it is not as challenging as I thought it would be. Some exercises are very easy and I don't feel like I have learnt a lot of new things. The exercise where you have to choose between "was" and "were" according to subject should be for students not for the feature teachers... And I am pretty sure every person who wants to be an English teacher can distinguish between present and past tenses so I really do not understand what is the point of this kind of exercises. I hope it's going to get better in the next modules.