摘 要: | 1 TEACHER:George,go to the map and find North America. GEORGE:Here it is!TEACHER:Correct.Now,class,who discovered America?CLASS:George! 2TEACHER:Didn’t you promise to behave?STUDENT.Yes.sir.TEACHER:And didn’t I promise to punish you if you didn’t?STUDENT:Yes,sir,but since I broke my promise,I don’t expect you to keep yours. 3
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