Look at these signs below and write down the rules, regulations or advice they give. Use any of the modal verbs. The first one is done for you.

sample answers:

1. we ' enter the construction are without permission, perhaps it's dangerous. They only allow authorized personnel to enter the area

2. we ' enter a site or a building which has a sign like this. It means that any person who is not authorize personnel is not allowed to enter the area.​