Here's why:
* Long vowels are typically associated with a vowel sound that is pronounced the same way as the vowel's name (like "a" in "cake" or "e" in "tree").
* In "toothpaste," the vowel sounds are:
* oo in "tooth" is a short vowel sound.
* a in "paste" is a short vowel sound.
Therefore, "toothpaste" does not have any long vowel sounds.