阅读短文，选择合适的答案。
John lives in a tall building in the city of Beijing. There are eighteen floors in the building, and he lives on the fifteenth floor. He uses a lift(电梯)to go up and down.
John works very hard. He goes to work early. Every day he gets out of the lift. Then he walks to a bus stop. It is about two hundred meters from his home.
He usually catches the number 11 bus to work. John works in a factory about ten kilometers from his home. He starts working at 8：30, and finishes at 4：30. He gets back home at 5：15. He gets into the lift, and he goes up to the twelfth floor. Then he gets out of the lift and climbs up to the fifteenth floor on foot.
