mood
food
wooed
brood
interlude
brook
No.
Yes. The word rude has a long OO vowel sound (OO) as in rule and room. It rhymes with food.
Neither. It is a short OO word as in good and foot.
No. The O in do has a long OO (long U) sound. The word do rhymes with woo and coo.
No. The word book has a short OO sound as in good. It rhymes with cook and look.
Yes. It has the long OO vowel sound as in tool. It rhymes with booth and truth.
No, it is a long U (long OO) sound. A long O would be doe or dough. Do rhymes with OO words such as coo, moo, and zoo.
No, the "oo" in "moody" is pronounced as a diphthong, with a blend of the sounds "oo" and "ee." It does not have a long "o" sound.
Toodle-oo
Yes, the word "foot" has a long /uː/ sound, not a long /oʊ/ sound.