读短文，选择正确答案。
Zhang Yun is a teacher. She teaches music. She likes singing. She works in a primary school (小学).
She goes to school by bus.
1. — What does Zhang Yun do?
— Zhang Yun is a ___________.
A. teacher
B. nurse
C. salesperson
2. Zhang Yun likes ___________.
A. collecting stamps
B. singing
C. riding a bike
3. Where does Zhang Yun work?
A. In a hospital.
B. In a supermarket.
C. In a school.
4. — How does Zhang Yun go to school?
— Zhang Yun goes to school ___________.
A. by subway
B. by bike
C. by bus
