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Mr.Smith worried about the missed shirts all evening.He tired to remember exact what he had done for the time he leftthe store until the time he got home.He remembered whether he had looked at the shirts while he was eating lunch.So he must have them when he left the store.He remembered when showing them to a friend on the bus.So he had the shirts then.He went directly from the bus to his house,and he must have forgotten them on the bus.He was in hurry to get off and forgot to check the packages lay on the floor.He shouid be more careful next time.