读一读，将字母的序号写在横线上。

A. Today is my birthday. I am very happy. My friends and I have a party at home.

B. On Children's Day, I go to the park with my friend Lily. We are very happy.

C. On Mother's Day, I give some flowers to my mum. I love my mum.

D. On Children's Day, I go to the cinema with my brother. We are happy.