You have about 30 minutes to answer each question

You have about 30 minutes to answer each question. You must take account of how many marks are for each part when you answer it. Even if you think you can write more, don’t spend 15 minutes a part worth only 5 marks. Leave space at the end of your answer and come back to it if you have to spare later. And if you can’t think of an answer to some part, leave a space and move on to the next part. Don’t write about something else if you don’t know the correct answer — this is just a waste of your time (and the examiner’s).