Explanation:
✅ Raining cats and dogs = raining very heavily.
❌ “Animals outside” — literal and wrong.
❌ “Drizzling” — too mild.
❌ “Pleasant” — opposite meaning.

Explanation:
✅ At the drop of a hat = instantly; without hesitation.
❌ “After thinking carefully” — opposite of quick action.
❌ “If he feels like it” — uncertain.
❌ “Only under pressure” — forced, not voluntary.