Crossword Puzzle Source of infallible teachings

Clue: Source of infallible teachings

Source for many US officers (ROTC with 4 letters)
Office snack source (CANDYMACHINE with 12 letters)
What carnivores like to do after a hard day at the office? (COMEHOMETOROAST with 15 letters)
County officers (SHERIFFS with 8 letters)
Venus' offspring (CUPID with 5 letters)
Source of the quotation (e.g. FLIPWILSON with 10 letters)
Stingy snack vendor's special offer? (BUYONEGETONEFRITO with 17 letters)
Diner offering, perhaps (e.g. CLUBSANDWICH with 12 letters)
Jewelers' offerings (BERYLS with 6 letters)
Mandarin's office (YAMEN with 5 letters)