照片里的人们正在庆祝生日。

The people in the photo are celebrating a ___birthday.

朋友们一起庆祝生日。

Friends are celebrating a ___birthday.

我的生日在下个月，我打算邀请朋友们来庆祝。

My ___birthday is next month, and I plan to invite friends to celebrate.

这个小镇正在庆祝建镇200周年。

The town is celebrating its 200th ___birthday this year.