A．Because London taxi drivers all have gone through a very tough training period to get a special taxi driving licence.
B．Because London taxi drivers all are London natives.
C．Because London drivers all are living in the corner of the Capital.
D．Not given.

A．The woman is seeing a doctor.
B．The woman is a close friend of the man.
C．The woman is tired of her work.
D．The woman has been working too hard.