51. I’ll take my CD player because we might want to listen to music. CASE I’ll take my CD player _ in case we might want to _ listen to music. 52. It’s time you started some serious work at college. DOWN It’s time you _ _ serious work at college. 53. There probably won’t be any more customers today. UNLIKELY It __ be any more customers today. 54. They had to cancel the outdoor exhibition because of the bad weather. CALLED The outdoor exhibition __ because of the bad weather. 55. I failed to persuade Tom to take up stamp collecting. SUCCEED I __ Tom to take up stamp collecting. 56. We found it difficult to write the story. TROUBLE We __ the story. 57. Don’t worry! I’ll make him tell the truth. OUT Don’t worry! I’ll __ him. 58. I have never been to the National Museum. STILL I __ the National Museum.