题目：
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| I ran across an old photo of him-my pet dog-the other day, thinking of some old things. He's been dead for 25years. His name was Rex. 1 was his favorite recreation. He had so much 2 in the water as any person I have known. You didn't have to throw a stick in the water to 3 him to go in. Of course, he would bring back a stick to you if you 4 throw one in. That 5 me of that night, when he brought back a small 6 that he found somewhere- how 7 nobody ever knew. Since it was Rex, it 8 easily have been half a race. The box wasn't a good one. It was just a(n) 9 old piece that somebody 10 . Still it was something he wanted, probably 11 there was some difficulty in transportation. And that he thought could test his courage. We first knew about his achievement when, deep in the night, we 12 him trying to get the box up onto the porch. It sounded 13 two or three people were trying to tear the house 14 . We came downstairs and turned on the 15 light. Rex was on the top step trying to pull the thing up, but it had 16 somehow. And he was just holding his own. I suppose he would have held his own 17 dawn if we hadn't helped him. The next day we carried the box miles away and threw it out. If we had thrown it out in a 18 place, he would have brought it home again, as a small token (象征) of his strength in such matters. 19 , he had been taught to carry heavy wooden objects about and he was 20 of his skill. | ||||
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