Questions 19 to 21 are based on the conversation you have just heard.

A．Borrow a book from the library.
B．Look after your children.
C．Drive to the seaside for a holiday.
D．Dine at a restaurant.

A．The care and proper selection of dogs in a family.
B．Different breeds of dogs.
C．Responsibility for seeing that dogs are properly cared for.
D．Different books about dogs.