Choose the correct heading for each paragraph. There is one extra heading which you do NOT need to use.

1. 3D printer.
2. Convertible laptop.
3. Quadcopter.
4. Robot vacuum cleaner.
5. Tablet.
6. Webcam.

A. 3D printer Convertible laptop Quadcopter Robot vacuum cleaner Tablet Webcam

This type of drone is very popular nowadays. It is a small remote-controlled* aircraft that looks like a helicopter, with four blades on the top. It can be used specifically to film or photograph things from the air.

B. 3D printer Convertible laptop Quadcopter Robot vacuum cleaner Tablet Webcam

This machine can make almost anything. First of all, you make a computer model of the thing you want to create. Then you need to choose a material for the object. The most popular material is plastic. After that, you start the process, and the device starts working, creating the thing layer by layer**.

C. 3D printer Convertible laptop Quadcopter Robot vacuum cleaner Tablet Webcam

Such devices are also called 2-in-1 or hybrids***. They have a touch screen and are quite compact in size. They are more powerful than tablets as they have a PC operating system. We can use them for work, education or entertainment.

D. 3D printer Convertible laptop Quadcopter Robot vacuum cleaner Tablet Webcam

This machine is very useful while you're doing your household chores. It is easy to tidy up the flat with the help of it. It can have different cleaning programmes and work without human control. It is also compact and not heavy, so you can take the device with you to any place.

E. 3D printer Convertible laptop Quadcopter Robot vacuum cleaner Tablet Webcam

This device can be connected to the computer or built into the laptop. With the help of it, we can take photos, make videos and transmit them on the internet in real time. It's easy now to get in touch with our friends, relatives or colleagues in any part of the world.