单项选择题
A．was paid by the letter-writers B．was paid by the letter-receivers C．was got by postmen D．both B and C
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．postmen needn't get postage B．people needn't pay postage C．the post office could get more postage D．people should pay more postage