文章摘要：Jenny 邀請Jane在星期一參加生日晚會。但是Jane 那天晚上要參加數(shù)學考試，沒時間去。請幫Jane寫一封信表示感謝，她同時送上一份禮物，以示祝賀。時間是5月20日。May20th,Dear Jenny,I'm glad to hear your good news。Thank you for inviting me to your birthday party。

Jenny 邀請Jane在星期一參加生日晚會。但是Jane 那天晚上要參加數(shù)學考試，沒時間去。請幫Jane寫一封信表示感謝，她同時送上一份禮物，以示祝賀。時間是5月20日。

Dear Jenny,

I'm glad to hear your good news. Thank you for inviting me to your birthday party. But I'm afraid I can't come. Because I'll have a math exam on Monday evening. Here is a gift for you. I hope you will love it.

Happy birthday!

Sincerely yours,