—What does your father do, Lily?

  —He is _____. His job is to make sure that drivers obey the traffic rules.

  A. an actor    B. a policeman    C. a waiter    D. a reporter

－What does your father do, lily?

－He is _________. His job is to make sure that drivers obey the traffic roles.

　　 A. an actor　　 　　B. a policeman　 　　 C. a waiter　 　　　D. a reporter

－What does your father do, lily?

－He is _________. His job is to make sure that drivers obey the traffic roles.

　　 A. an actor　 B. a policeman　 C. a waiter　 D. a reporter

－What does your father do, lily?

   －He is _________. His job is to make sure that drivers obey the traffic rules.

A. an actor                B. a policeman                  C. a waiter              D. a reporter