* cup
* duck
* jump
* much
* nut
* sun
* truck
* ugly
* young
* love (This one is a bit trickier, as it's often pronounced with a "short u" sound, but it's technically a different vowel sound called a "schwa".)
It's important to remember that the spelling of a word doesn't always tell you how to pronounce it, so it's good to have a good understanding of the different vowel sounds in English.