Выпишите существительные, которые употребляются только во множественном числе (25 существительных).
economics, police, news, means, goods, pants, subjects, billiards, darts, outskirts, premises, athletics, cattle, scissors, taxes, pyjamas, mechanics, spectacles, clothes, stairs, maths, electronics, eyes, trousers, shorts, tights, gymnastics, congratulations, crossroads, patience, scales, lodgings, authorities, soap, foundations, equipment, research, contents, looks, countryside, traffic-lights, tongs, toothpaste, headphones, delays, binoculars.