"There's one thing I don't understand about either of you," Alice returned, crisply.
“Take a chair, please,” he said crisply, without looking up.
"I don't know what you understand, Daniels," he said, crisply.
"No one took particular pains, I should imagine," she said, crisply.
Her tone was so crisply sarcastic that he turned in astonishment.
"That's all right, that's ...