* Toad: The "o" in "toad" has a short "o" sound, like the "o" in "hot."
* Top: The "o" in "top" has a short "o" sound, like the "o" in "hot."
* Two: The "o" in "two" has a long "oo" sound, like the "oo" in "moon."
Therefore, only the word "two" has a long "o" sound.