Ir para o conteúdo principal
Milhares de questões atuais de concursos.

In the fragment “on becoming director of the American National Security Agency” (R. 9 and 10), the preposition “on” refers to a period when the action is taking place.

© Aprova Concursos - Al. Dr. Carlos de Carvalho, 1482 - Curitiba, PR - 0800 727 6282