1904 Sept. 1000/1 If you'll be good, and not go peeping and prying and tale-tattling, I'll..I know! I'll save you both my honeycake, every day at supper.
1933 ‘L. G. Gibbon’ ii. 70 I know! Let's go and see Segget at night.
1995 G. Kamani (1996) 22 I know what! When DeSouza comes in today, Savitri should read her sum like this: ‘One plus one cow plus one Italian.’
2006 S. Preece in S. Maguire 168 I could play the tambourine—or—I know!—I could have a little skellington on a string and rattle him in time to the music!