A crowded busy dock with people standing next to a freight car either loading or unloading it.aa .
It is certain that a crowded dock has people on it standing next to a freight car because the car is late for it 's next unloading .
Chances are about even that a crowded dock has people on it standing next to a freight car because the car is late for it 's next unloading .
It is certain that a crowded dock has people on it standing next to a freight car because the car is late for it 's next unloading .
A crowded dock has people on it standing next to a freight car because the car is late for it 's next unloading .