根据下列短文内容，在短文后的空格处填上一个恰当的词，使短文完整、通顺。
Dear Bob,
My name is Rich .I'm fourteen ____ old. I'm studying in a middle school. My school is nice and clean. There are 30 students in my class. It's ____ today. My classmates and I are ____ a good time on the beach. It’s a nice place .The water is blue and clear. Many birds ____ flying over the sea. Many people are ____ in the sea. Some boys are ____ football. Some people are lying____ the beach. A girl is ____ a book on a chair .Another girl is ____ photos. I ____ writing to you! What are you doing?
I hope you can write to me soon.
Best wishes!
Rich
