Поставьте правильную форму неопределённого артикля перед существительными и нпишите их множественное число: a car-cars; -train-…; -axle-…; -crash-…; -line-…; -speed-…; -delivery-…; -coach-…; departure-…; -computer-…; -freight-…; -traffic-…; -box-…; -engine-…; -railway-…; -railwayman-….

A car-cars, a train-trains,an axle-axles,
a crash-crashes,a line- lines, a speed-speeds, a delivery-deliveries,
a coash-coaches,
A departure-departures,a computer-computers, a freight-freights, a traffic-traffic,
a box-boxes, an engine-engines, a railway-railways, a railwayman-railwaymen