On-air challenge: You will be given two words. Change one letter in each of them to make two new words that name things that are in the same category. (Hint: In each pair, the letter that you change to — that is, the new letter — is the same in each pair.) For example, given the words "poked" and "tummy," the answer would be "poker" and "rummy."
Last week's challenge: What specific and very unusual property do these five words have in common: school, half, cupboard, Wednesday and friend? Identify the property and name a sixth word that shares the property. Any word having this property will be counted correct.
Answer: Each word contains a silent third letter.
Winner: Steve Worona of Montpelier, Vt.
Next week's challenge from Pierre Berloquin: What letter comes next in this series: W, L, C, N, I, T?
If you know the answer to next week's challenge, submit it here. Listeners who submit correct answers win a chance to play the on-air puzzle. Important: Include a phone number where we can reach you Thursday at 3 p.m. ET.