—What happened to you on your way back to the hotel last night ?—I lost my way in complete darkness and , things worse , it began to pour .
56. The shopkeeper _____ the tramp(流浪汉) stealing sweets from the new supermarket and _____ him.
55. I can’t see John anywhere. Where _____ he have gone?
54. Extensive tests have been on the patient.
53. She_______most of the prizes for swimming.
52. Don’t worry. Your child is old enough to___________himself.