"...but now that we are here, we'd best put a bold face on it." Puddleglum, in The Silver Chair.

"Well, I've had enough of this jabber.  The Mouse is a..."

"...a fair treat, but this one would talk the hind leg off a donkey. Off we go, mates" One of the Lone Island slavers referring to Eustace, in Voyage of the Dawn Treader.

"If you say another word about going back, and if you don't start...."

"...taking me to that water-gate at once—do you know what I’ll do? I’ll rush out into that passage and scream. Then we’ll both be caught." ~ Aravis to Lasaraleen, in The Horse & His Boy

"Don’t be so jolly clever. I was thinking of the house..."

...beyond yours." Polly to Digory in The Magician's Nephew.

"Wouldn't he know without..."

"Wouldn't he know without being asked?" said Polly in the Magician's Nephew

"Does he know what the arrangement...."

"... with the Witch really was?" — Lucy to Susan in LWW, wondering whether Edmund knows what Aslan did for him.

"I know by my art..." 

"I know by my art that you will find King Lune straight ahead". The Hermit of the Southern March instructing Shasta where he must go. (HHB)

"There is something wrong"......