A.It is an encyclopedia about London streets.
B.It is an exam would-be cabbies must pass.
C.It is a navigation between the landmarks.
D.It is a license for the cabby profession.
A.the expense of spending luxurious holidays in Spain
B.the waste of time to remembering London streets
C.the efforts of grasping the transportation knowledge
D.the hardship of living as a London taxi driver
A.It has a privilege to use a smartphone platform.
B.It provides illegal service in American cities.
C.It may be completely suspended in the near future.
D.It has met some obstacles in its fast booming.