ABSTRACT
Teacher smirks. ‘That is up to me. I may have it at any point between now and the end of term. However, let me assure you of this, when I do have the test it will be a surprise!’
After school, Bob and Patricia are discussing the bad news. Bob is very worried as he has a poor memory. ‘I could pass, I’m sure,’ he says, ‘if I knew on which day the test would be, then I could learn everything the night before.’
