11.   Forester had an idea of how he might get the additional information, but it would have to wait until tomorrow.

12.   He had an idea for designing these using natural climatic heat and photoelectric panels.

13.   He had no idea that people thought he was clowning.

14.   He had no idea what was causing the red blotches on his skin.

15.   He had this idea that his bonus might suffer if a boss caught him away from his telephone.

16.   He has some idea of me as a cheating seductress out to get his brother.

17.   He sounded coherent, but he was too ill to have any idea what he was saying.

18.   He was not quite sure who it was, but he had certain ideas.