Word spiral

1. Flash of lightning

2. Therefore

3. Fly high

4. Wealthy

5. Fifty per cent

6. Footy supporters

7. Lather

8. Slender

Starting from 1, fill in the grid in a clockwise direction with four-letter words. The last letter of each word becomes the first letter of the next to reveal the sevenletter key word in the shaded boxes.

9. Pit

10. Facility

11. Verge

12. Dutch cheese

13. Gentle

14. Demonstration, in short

15. Betting chances

16. To bridge