根据情景，选择合适的句子，选出正确的选项。

你可以这样把你的数学老师介绍给你的朋友，

A．This is our school．

B．This is our math teacher．

C．These are our teachers

I'm a ________．

A．teach

B．teacher

C．teachers

阅读，回答问题。

　　Hello．I'm Mary Smith．I'm from USA．I'm a student in a middle school．I'm 14 years old．I like singing and playing the violin．There are four people in my family．My mother is a my math teacher and my father is an engineer in an air-conditioner company．My brother and I are twins．He likes swimming and playing football．We often go to school on foot．Because we live next to the school．I'd like a pen pal from China or Japan．Please write to 201 East Street, Washington, D．C．,3409872, USA．

1．What's Mary's hobby?______________

2．How does Mary go to school?________

3．Where does Mary live?_____________

4．How old is Mary's brother?__________

5．Where does Mary come from?________