走遍美国第一单元"林登大街46号"内容的梗概!!!

嗯,好的:
Richard met Alexandra when he was taking photos for his album.Alexandra was an exchange student from Greece.They had a nice chat then said goodbye to each other.Richard forgot his bag and then Alexandra picked it up.
It was late when Richard realized it ,he was upset and told his wife about it,then the latter called the lost and found but got no result.And at the same time,Alexandra was asking the way to Richard's home,she wanted to give him his bag back.
Just when Richard's family was about to have their dinner,the doorbell rang.Robbie--Richard's brother--opened the door,it was Alexandra,who impressed robbie very well.Richard was very thankful to Alexandra's kindness.They tried to stay Alexandra for dinner but she left.Funny enough,this time Alexandra forgot her bag in Richard's home.
obviously,the story will continue...