Where are you going, Jane?
I'm going to the hospital to see Susan.
I saw her yesterday.She was a little better.
Must I catch a number 7 bus to get there?
No, you needn't. A number 13 bus will also take you to the hospital.
Number 13 buses run much more frequently, don't they?
Yes. I caught a number 7 bus yesterday, and they said I had taken a wrong bus.
Thank you, Henry. I'll get a number 13.
But number 13 buses leave from the center of town.You'll have to walk two miles to catch one.