Crossword Puzzle Adults have 12

Clue: Adults have 12

Heron havens (BIRDSANCTUARIES with 15 letters)
Ski haven (ASPEN with 5 letters)
"Tell me ___ haven't heard before!" (ONEI with 4 letters)
New Havenite (ELI with 3 letters)
World capital founded as a 12th-century fortress (RABAT with 5 letters)
Adults-in-training (TEENS with 5 letters)
"Haven't we __?" (MET with 3 letters)
Setting of the oldest university in Spain (founded in 1218) (SALAMANCA with 9 letters)
Mayo is 1/12th of it (ANO with 3 letters)
1200, on a monument (MCC with 3 letters)