WHAT HAS 4 LETTERS SOMETIMES 9 LETTERS BUT NEVER 5 LETTE RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

The word is STARTING! Did you answer this riddle correctly?
YES  NO  

QT. Did you answer this riddle correctly?
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Dozens. Did you answer this riddle correctly?
YES  NO  

C and Y Did you answer this riddle correctly?
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Short. Adding 'er' to short gives you shorter. Did you answer this riddle correctly?
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A fire quacker. Did you answer this riddle correctly?
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The hot dogs were bad and the brats were wurst! Did you answer this riddle correctly?
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Japan, China, Nepal, India Did you answer this riddle correctly?
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'HNY everyone' Did you answer this riddle correctly?
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River Dixon. We know his name is river, so 500 being D in Roman numerals, 10 being X, 1 being I, and an is the fourteenth letter of the alphabet. D at the start, X in the middle, in the middle of those two is I, so that spells DIX, near the end is none/0, which is like an O so that's DIXON. Then to the left of that is River so, RIVER DIXON. Did you answer this riddle correctly?
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Golf Did you answer this riddle correctly?
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A mailbox Did you answer this riddle correctly?
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Post Office is the correct answer to this riddle

A post office is a public department that offers mail-related services such as letters, money orders, postage stamps, etc. Did you answer this riddle correctly?
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Tuesday, Thursday, today, and tomorrow. Did you answer this riddle correctly?
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The letter U. Did you answer this riddle correctly?
YES  NO