Pre-Intermediate Level >> Grammar Worksheets >> Students read signs posted in and around a factory and find mistakes in the use of must/mustn't.

Factory Signs - Must and Mustn't

Pre-Intermediate

Look at these signs displayed in a large factory. Which ones are correct?

1. ALL VISITORS MUST REPORT TO FACTORY MANAGER.

2. PHOTOS CAN BE TAKEN ONLY OUTSIDE

3. VISITOR PARKING FREE - YOU DON'T HAVE TO PAY

4. PHONES MUSTN'T BE SWITCHED ON INSIDE FACTORY

5. IF YOU HEAR ALARM, YOU MUST LEAVE QUICKLY AND SAFELY

6. DRIVERS MUST STAY UNDER 10 MPH

7. PROTECTIVE HELMETS MUST ALWAYS BE WORN

8. SMOKERS MUST GO OUTSIDE TO SMOKE

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