Choose one correct sentence for each picture. There are more sentences than you need.

1. 2. 3.

4. 5. 6.

a) You must go to this point if there is a fire.

b) You are required to wear a hard hat at this area.

c) Authorized personnel are obliged to enter.

d) You mustn’t consume this.

e) A fire extinguisher needs to be placed here.

f) People without authorization are prohibited from entering

g) You can get fire fighting equipment here.

h) Smoking is not allowed after this point.

17. Complete the sentences with should or shouldn't and the words in brackets.

1. (You / to download) ….. tracks from illegal sites. It damages the music industry.

2. If you want quality pictures, (you / to buy) ….. a digital camera.

3. I think (you / to share) ….. tracks with friends. It's illegal.

4. I don't think (you / to buy) ….. a VCR. They're out-of-date. Buy a DVD player.

5. (You / to give) ….. your password to anyone.

6. (You / to update) ….. your virus protection software.

7. It's easy to damage a flat screen. (You / to touch) ….. it.