31.   I have an idea.

32.   I have ideas and you snoop.

33.   I have no idea how I am going to support myself.

34.   I have no idea what he was babbling on about.

35.   I have no idea who they are, which just goes to show the ephemeral nature of psychiatric certainties.

36.   I have no idea why it is always an odd number.

37.   I have no idea, either, whether Thomas was courting Susan, or Augusta, or both, or neither.

38.   I wonder if the company have any idea how much wildlife has been killed by the lack of water.

39.   If we had a good idea, it would be put into action.

40.   If, therefore, public spending increases we have no idea whether the rise went in pay or in improved services.