1.  A ballet dancer who does not practise every day loses a lot of skill, as does a musician.

2.  A barn owl usually lays an egg a day or every other day until there is a clutch of four to six.

3.  A climber literally crawls, hand over hand, up a vertical face, sinking the ax with every step.

4.  A collective sigh of relief seemed to whistle from every pore of the house as I walked away.

5.  A definition of success can be as different as every individual entrepreneur.

6.  A democratic, parliamentary system of government has been set up with free elections at least once every five years.

7.  A doubling of the set-aside rate is not good news, coming at a time when every penny counts.

8.  A fatal heart attack happens in Britain every three minutes.

9.  A few of these devices should be exploded every year to test whether the refurbishing is working up to snuff.