Have you tried looking for past papers. If you have great. You see, English is not like maths or sciences where you have to practise exam questions to pick up techniques. I think you need to pick up how to answer certain types of questions depending on what words are found in the question and how many marks it is. E.g if I remember rightly, a 'what' question needed ten points where each point had to have a quote and a backing short explanation - correct me if im wrong.