Accuracy is crucial..., so do make sure you visit this course and practise your grammar...and especially les Verbes! Remember that practice makes perfect, or as the French say: C'est en forgeant que l'on devient forgeron'.
The only thing you won't find in this course are VERBS. Please refer to Grammaire - Les verbes, if you want to practise verbs in particular. In fact, even if you do not really want to practise verbs.. I would still advise you to do so...it is more fun than you think ☺