听问句，选答句。（每小题2分,共10分）
1. A. There are four seasons in a year.  B. Spring is my favourite season.
2.A.It's June 21st.                     B. It's Thursday.
3. A. No. He's playing football.      B. Yes. He's very tall.
4. A. My mom is a doctor.             B. Sure. Hold on, please.
5. A. They are cooking dinner.         B. She is answering the phone.