Short "u" sound:
* Good: The "oo" in "good" makes the same sound as the "ou" in "should."
* Wood: Same as "good."
* Put: The "u" in "put" makes the same short "u" sound.
* Could: This is the past tense of "can," and it has the same vowel sound as "should."
* Book: Another word with a short "u" sound.
* Look: Same as "book."
* Cook: Another word with the short "u" sound.
Please note: There is a subtle difference between the "u" sound in "should" and the "u" sound in words like "put" and "book." The sound in "should" is slightly more open and longer.