1. Never ask him for help.
  2. Never ask him help.
    Are these imperative sentences correct?
  3. Justice delayed is justice denied.
  4. Justice delayed is denied justice.
    Are these two sentences OK?

a is correct in both instances.

“Never ask him help” is correct? Sounds strange.[YSaerTTEW443543]

TOEIC listening, photographs: Pulling a net[YSaerTTEW443543]

Sorry - I meant the first is correct in both instances.
The unconventional numbering threw me.