A．The man thinks travelling by air is quite safe.
B．Both speakers feel nervous when flying.
C．The woman never travels by plane.
D．The speakers feel sad about the serious loss of life.

A．Many young men, who live alone, have increased demand for houses.
B．Many young men need to rent more houses.
C．It is easy to apply for a mortgage for young generation.
D．The number of older people, many of whom live alone, becomes bigger and bigger.