Question

1) digital camera 2) headphones 3) mobile phone 4) microwave oven 5) remote control 6) home cinema system 7) vacuum cleaner 8) laptop 9) fridge freezer 10) dish washer Which invention from 1 are usually written as one word only? headphones

Answer 1

Вместе пишутся headphones, laptop, dishwasher

вроде бы всё

Answer 2

The invention from the list that is usually written as one word only is "headphones."