BEFORE I STARTED THE CAR, ALL OF THE PASSENGERS………THEIR SEATBELTS....
19. Before I started the car, all of the passengers………their seatbelts.
A. will buckle B. had buckled C. was buckling D. have buckled
19. Before I started the car, all of the passengers………their seatbelts.
A. will buckle B. had buckled C. was buckling D. have buckled