You will hear an interview with Derek Allen, an author, about the writing process. For questions 18-22, choose the answer (A, B, C or D) which fits best according to what you hear.

18 Derek Allen thought his book would be successful because
     A it deals with an unusual subject.
     B he did a lot of research for it.
     C its packaging was appealing.
     D he invested a lot of effort in it.


19 Allen says that writing for radio is useful because it
     A can be good preparation for writing a book.
     B makes you popular with a wide audience.
     C requires the same dialogue as a book.
     D allows you to introduce a variety of characters.


20 Allen says he uses science fiction because
     A it represents his vision of what the future will be like.
     B many events can happen in a short space of time.
     C he wants to make it popular among readers.
     D it allows him to explore a bizarre chain of events.


21 According to Allen, other writers use coincidence to
     A throw light on characters.
     B resolve difficulties with storylines.
     C make the reader work harder.
     D introduce an element of danger.


22 If Allen was a painter, which element of a painting would he get wrong?
     A the background
     B the shape of the figures
     C the proportions
     D the detail