根据短文理解,完成下列各题。
B
John's birthday is on August 16th. His parents are going to have a party for him. He is very happy about it. He would like to invite his friends to the party. Last Sunday night, while John was in his room, his mother walked in.
"Are you still doing your homework?" she asked.
"No, I'm writing a letter to Uncle Tom," John answered.
John's mother was very surprised because John never wrote letters to anyone.
"Are you asking him to come to your birthday party?"
"No," John answered, "Uncle Tom never comes to my birthday parties."
"Then what are you writing about?" his mother asked. "Will you read me the letter?"
"OK," John said, "but I haven't finished it. I have only written two lines. I'll read them to you."
"Dear Uncle Tom, thank you very much for sending me such a nice gift. I hope..." her mother stopped him. "But Uncle Tom hasn't sent you any gifts."
"I know," John answered. "I'm not thanking him for this year's gift. I'm thanking him for last year's. You know, it's never too late to thank him."