They are planning a surprise for her.

他们正在为她计划一个惊喜。

同一单元的其他句子

• My birthday is on March fifteenth.我的生日在三月十五日。
• When is your birthday?你的生日是什么时候？
• Her birthday party is next Saturday.她的生日聚会在下周六。
• We have a school trip in May.我们在五月有一次学校旅行。
• His birthday is not in June.他的生日不在六月。