1. Passengers on the flight ----- in London were quite upset, as their luggage had been mistakenly put on another aircraft.

A originates

B originating

C originate

D originated

정답은 B

이 문제가 분사문제라는 건 알겠는데 왜 정답이 (B) originating(현재분사)인건가요?

이미 런던에서 출발 '했었'으니 과거분사인 originated를 써야 하는거 아닌가요?ㅜ