Which of the phrases 1), 2), 3) and 4) given below each statement should replace the phrase printed in bold in the sentence to make it grammatically correct? If the sentence is correct as it is given and 'No correction is required' mark 5) as the answer.

Q:

All the presents had been sent off.

• 1
  sent off
• 2
  sent in
• 3
  sent at
• 4
  sent on
• 5
  No correction required