根据对话内容，选择正确答案。

Anna: Hello, Oliver. I'm doing a survey (调查) for my homework. Can I ask you some questions?

Oliver: Sure, I'm happy to help you.

Anna: What time do you usually get to (到达) school?

Oliver: I often get to school at about 7:30. I sometimes get to school after 7:50.
Anna: I see. Do you live far from our school?

Oliver: Yes. It's a little far. I usually go to school by school bus. Sometimes I go to school in my mother's car. She works in the hospital (医院) not far from our school.

Anna: Is she a doctor?

Oliver: No. She is a nurse. How about you? How do you come to school?
Anna: I always ride a bike to school. I never get to school after 7 o'clock.