12.Fleming was a poor (86)farmer.One day he (87)hearda cry for help coming from a nearby bog(沼泽).He ran out and saw a boy in the bog (88)crying and trying to free himself.Farmer Fleming saved him.The boy's father was very rich and he was very thankful to Fleming.He (89)told Fleming that he would like to take Fleming's son (90)with him and give him a good education(教育) and he was sure that the boy would(91)grow up to be a good man if he was anything like his father.Later Fleming's son went to famous medical(医药的) school in London.Many years (92)later,he became a famous doctor (93)called Sir Alexander Fleming.He discovered penicillin(发明青霉素).
Years (94)passed and the rich man's son was sick.What saved him?Penicillin.What was the sick (95)man's name?Sir Winston Churchill.