Questions 11 to 18 are based on the conversation you have just heard.

A．Young birds and young bats must be taught to fly.
B．Elephants do not seem to know file function of their trunks.
C．Thousands of young seals drown every year.
D．Older harvest mice build better nests than beginners.

A．He could take a taxi, and then change to a bus.
B．He must first take the underground and then change to the shuttle bus.
C．He could take bus, shuffle bus, or the underground.
D．He could take the underground, and then take a taxi.