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| It was seven thirty. Supper was 1 an hour ago, but Tom still wasn't 2 . Mrs Brown was worried. She went to the door and 3 . Half an hour later, Tom got home. When he saw his mother, he said, "I'm very, very 4 ." After supper, Mrs Brown asked, "Why did you come back so 5 ,Tom?" "In class, some of my friends made a lot of noise (吵闹声)," answered Tom. "Our teacher got 6 . After class he told us to do an exercise in the 7 ." "An exercise?" Mrs Brown said. "It was 8 , wasn't it?" "No, it was easy." "Why did it take so 9 to do it, then?" "We did our best to do it 10 ," answered Tom. "But we got different answers. All the answers troubled (困扰) our teacher." | ||||
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