Crossword Puzzle Drain opening

Clue: Drain opening

Openings on decks for drainage (SCUPPERS with 8 letters)
Ode title opening (TOA with 3 letters)
Grand opening sights (LINES with 5 letters)
Pi opening? (OCTO with 4 letters)
Arafat's opening? (Var.) (ALEF with 4 letters)
Drainage divisions (WATERSHEDS with 10 letters)
Face opening (PRE with 3 letters)
Mountain opening (CAVE with 4 letters)
Gossiper's opening remark, perhaps (YOULLNEVERGUESS with 15 letters)
The four teams who play on the opening day of the World Cup (GROUPA with 6 letters)