---Did you get there by bike?- No I took taxi. A. a aB. / aC. the theD. a the

问题补充：

---Did you get there by bike?

--- No, I took taxi.

A. a, a

B. /,a

C. the , the

D. a , the

答案：

A. a, a

(答案→)B. /,a

C. the , the

D. a , the

解析：句意：你骑自行车到那里吗？-不，我乘出租车。乘坐交通工具分为两类，介词类和动词类。by 直接加交通工具，on/in+冠词（人称代词）+交通工具，on foot步行。take+…+交通工具，或用动词来表达：walk,run,ride,fly,等。故选A。