I was walking around a big store，when I saw a shop assistant talking to a boy of 5 or 6 years old．The assistant said，"I'm sorry，but you don't have enough money to buy this doll．"Then the little boy turned to me and asked，"Uncle，are you sure I don't have enough money？

I counted his money and replied，"You know that you don't have enough money to buy the doll，my dear．"I asked him who he wished to give this doll to．"I wanted to give the doll to my sister for her birthday．I have to give the doll to my mommy so that she can give it to my sister when she goes there"His eyes were so sad while saying this．

"My sister has gone to be with God．Daddy says that Mommy is going to see God very soon too，All was because of a traffic accident"My heart nearly stopped．The little boy looked up at me and said"I told Daddy to tell Mommy not to go yet．I need her to wait until I come back from the store．"

I quickly reached for my wallet and said to the boy，"I suppose we checked again，just in case （万一）you do have enough money？""Ok，"he said．"I hope that I have enough．"I added some of my money to his without letting him see and we started to count it．There was enough for the doll and even some spare money left．The little boy became very excited．

I left the store，feeling as if my life had been changed forever．

66．Where did the writer meet the boy？　　

67．What did the boy what to buy？　　

68．What happened to the boy's family？　　

69．Why did the boy want to give his sister a gift？　　

70．Why did the writer add some money without the boy seeing？　　．