Sure, here are the sentences with the missing words filled in using the words from the box:

1. Excuse me. Which way is the theatre? **straight on**.
2. Go **roundabout**.
3. Take the first **turning on the right**.
4. To cross the river, go over the **bridge**.
5. Go right **round the square** and take the last exit **off it**.
6. Go right at the **traffic lights**.
7. It's safer to use the **bridge** when you go across the road.
8. The town **square** has shops on all four sides.