你的朋友Tom邀请你参加他这周六的生日聚会.但是你的爸爸出差了,妈妈卧病在床,需要人照顾.而且周日有英语考试,你要复习功课.因此你无法参加生日聚会.请你写一封信感谢Tom的邀请,并说明无法前往的原因.

Dear Tom:Thank you very much for inviting me to your birthday party, but my dad was on a business trip, my mother was ill in bed, need someone to take care of. But on Sunday the English examination,...