說明：第 16 至 25 題，請依照段落上下文意，選出最適當的答案。
 London is the most diverse city in the world, with more than 300 languages   16     in the city andpeople of 50 nationalities   17    there. What are the causes underlying London’s ethnic diversity? Oneis that London is a business center so that people all over the world come here to find jobs and   18   money. But the cause that makes people   19     in London is language, because they want their childrento build up the   20    in English, which is a great gift and advantage in the global context.   21   cause is surprising. Londoners tend to leave people   22    , and this gives newcomers much space tolive their own lives. Finally, food is also an important cause bringing people all over the world to London.Londoner’s   23         for foreign food creates   24    of job for new communities, which invites moreforeigners, and at the same time more foreign   25   , into the city.
【題組】16.
(A) speak
(B) speaking
(C) speaks
(D) spoken