①A keyboard is the part of the computer that you type on.
②What's the difference between computer hardware and computer software?
③The United States is one of Englishspeaking countries.
④Hardworking people are more likely to succeed.
⑤Have you got a computer at home?
⑥This is an interesting book and it is also a useful one.
⑦The Internet is the biggest source of information in the world.
⑧He came up with the idea of the World Wide Web.