完型填空

　　David lived in a small village．His father was often ill and he had to spend much money on medicine．And when he was twenty-six, he 　　1　　 some money from his friends and 　　2　　 married．His wife was beautiful but she came from a 　　3　　 family．So she could not help him．She told her husband to find work in the town and hoped he would get enough money to pay off his debts(债)．

　　The young man could neither read nor write．Of course 　　4　　 in the town would hire a man 　　5　　 him．He had to go to 　　6　　 island to work for a farmer there．The island was small and there were only three men on it．They lived a hard life．David 　　7　　 his father and wife so much that he wanted to write to them, 　　8　　 he couldn't．Luckily, Charlie, who had been in school for five years, helped him．And then David asked the farmer to 　　9　　 the letter for him．From then on, David waited for a 　　10　　 every day．

　　About two months later, the farmer brought his wife's letter to the island．He was very 　　11　　 but he couldn't read it．He had to ask Charlie to help him again．When the farmer came out of the house, he found David 　　12　　 Charlie's mouth．The farmer was very 　　13　　 at what David was doing．“　　14　　 are you doing it for, David?”he asked．“I 　　15　　 let him read my wife's letter,”David replied．