Answer — Exercise Grammar 1

(Sentences 4 and 7 don't have relative pronouns.)

1. It's a virtual shop which sells applications for phones, etc.
2. It's a machine that gives you directions when you are driving.
3. It's a secret word which you use to access computers, bank accounts, etc.
4. -
5. It's a person who writes a kind of online diary for others to read.
6. It's a public area where people can connect their phones and computers to the internet.
7. -
8. It's a person whose life is dominated by the internet.
9. It's a section of your social networking profile where people can leave messages for you.
10. It's a drink which is designed to give you more energy.