单项选择题
A．Danny was not a good student B．Danny's mother talked too much about the school C．Danny's teacher knew something about Danny's problem before D．Danny wanted to get away from Rick
A．invented the first stamp B．was a postman in England C．gave the idea to use stamps D．was the first man to use stamps
A．was tired of the school and his friends B．had no friends at all C．was not sure what he should do with the problem D．made some new friends in the neighborhood