Crossword Puzzle Sounds from a snake pit?

Clue: Sounds from a snake pit?

Snake that sounds augmentative (ADDER with 5 letters)
Sounds of allergy season (ACHOOS with 6 letters)
Attention-getting sounds (e.g. AHEMS with 5 letters)
Sounds of approval (e.g. AHS with 3 letters)
"When the angry trumpet sounds ___": Shak. (ALARUM with 6 letters)
Sounds the alarm, e.g. (ALERTS with 6 letters)
Sounds the alarm (e.g. ALERTS with 6 letters)
Sounds an alarm (ALERTS with 6 letters)
Snake of the Amazon (ANACONDA with 8 letters)
Man's name that sounds like two letters of the alphabet (e.g. ARI with 3 letters)