Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19.

As the train gradually slowed down in the approach to King’s Cross station, Harry thought he had never wanted to leave it less. He even wondered briefly what would possibly happen if he simply refused to get off, but remained ___(1)___ sitting there until the first of September, when it would take him back to Hogswarts. When the train finally came to a standstill, ___(2)___, he lifted down Hegdwig’s cage and prepared to drag his trunk from the train as usual. When the ticket ___(3)___ signalled to Harry, Ron and Herminone that it was safe to walk through the magical barrier between platforms nine and ten, he found a surprise that was awaiting him on the ___(4)___ side: a group of people ___(5)___ he had not expected at all were standing there to greet him.
(Adapted from Harry Potter 5)