A man came home from work late，tired and unhappy.74．He found his five﹣year﹣old son waiting for him at the door．

The boy asked，"Daddy，how much do you make every hour？"The father was angry at his son's question．When he said 20an hour，the little boy asked him for 10．The father was even angrier because he thought the boy just wanted some money to buy a toy．So he didn't answer his son．

The little boy quietly went to his room．After about an hour，the man calmed himself down（使…平静） and started to think：

Maybe there was something he really needed to buy with that ＄10．

"Maybe I was too hard on you just now，"the man went into his son's room and said，"Here's the 10you asked for．"

"Oh，thanks，Daddy!" The little boy said．Then he reached under his pillow（枕头），pulled out some crumpled（压皱的） money and said："Daddy，I have 20now．Can I buy an hour of your time？Please come home earlier tomorrow.75．我很想跟你共进晚餐．"

71．The man didn't give the money to his son at first，did he？　　．

72．How much could the father make every hour？　　．

73．What did the boy really want to buy？　　．

74．　　．

75．　　．