B: I'm reading a book.

She is thinking.

Welcome to the Children's Centre. Happy Children's Day! You can do many things here. Look at these people. They're very active. This is Chen jie. She's drawing picrures. Mike is watching insects. Amy is reading a story book. WuBinbin is playing chess with a man. Who's the man? He's Mr Black, WuBinbin's math teacher. He's a smart man. John and Sarah are taking pictures. Where's Bai Ling? Look! She's over there, she's writing a report on the Children's Day. Her sister is singing and playing the piano.

B: (我们在游泳).

B:(思考).

I often going shopping with my mother.