Billy is a boy of fifteen．His parents died three years ago．One day when he was walking in the street , he 1 a wallet．He returned it to the owner , Mr．Baker．He gave his 2 to the boy．As the boy had no job , Mr．Baker made him work for him in his 3 ．Billy worked so hard that Mr．And Mrs．Baker were 4 with him．
Mr．Baker loved planting 5 ．The week before last , he brought a few trees home , planted them in the 6 himself and watered them every day．Several days 7 , he had to leave for another city．Before he started , he said to Billy , “Take good care of these trees．Some boys near our house always want to steal(偷)them．” “Don’t 8 about them , sir , ” answered Billy , “I’ll try my best to watch them．” Six days passed and Mr．Baker came back．He asked, “ 9 anyone come to steal the trees when we were away??” “No, sir , ” said Billy , “To stop someone from stealing the trees , I 10 them up six days ago．I have hidden(藏)them for almost a week．”