问题详情

Write a note of about 50 - 60 words based on the following situation: Your friends want to make a trip to Beijing. And they had invited you to join in. But you can not go with them for some reasons. Write one of them a note, making an apology and explaining why. Marks will be awarded for content, organization, grammar and appropriateness.

请帮忙给出正确答案和分析，谢谢！