Questões de Concurso Público BRDE 2015 para Analista de Sistemas-Desenvolvimento de Sistemas

In the sentence “A crossing in central London had programmed intervals for red and green lights” (l.14-15), the underlined verbal locution is in the ________________. If we put it in the present perfect continuous, it would be written as ______________.

Mark the alternative that correctly and respectively fill in the blanks above.