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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 They're out-of-date.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.

Underline the correct verb forms and complete the sentences.

1. You need not / must not wear a seat belt all the time.

2. You must not / need not take me to the station. I know the way.

3. Is your telephone all right now? May / Can you hear me again?

4. It must / cannot be Greg. Greg is much taller.

5. Be careful! You must not / need not fall over again.

6. Don't panic. You must / may pass the exam next time.

7. I don't want to go out now. I may / must dust the furniture first.

 

Each of the following sentences contains a mistake. Find the mistakes and correct them.

1. Machines should to make our lives easier in many ways.

2. You should to enclose the invoice.

3. Machines can to do all kinds of jobs today.

4. By choosing the size of the gears, the speed and direction of the rotation of the axles can controlled.

5. The customer has pay import duty before he can get the goods.

6. Do I may come in?

7. This new monitor should displays more than two thousand colours.


UNIT 11

METALS

LEAD-IN

 

1. Look at the objects in the pictures. What metals do you think they are made of?

A B C D

 

2. Name as many metals as you can? Where are they used?

READING


Date: 2015-12-11; view: 1260


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