a final ending indicating a question or a guess, attached to a verb
오늘부장-님-도 오시-는가요? ― Oneul bujang-nim-do osi-neun'gayo? ― Is the manager coming today as well?
방학동안-에도 학교-에 학생-이 많이 있-는가요? ― Banghak dong'an-e-do hakgyo-e haksaeng-i mani in-neun'gayo? ― Are there many students in the school during the vacation, too?