Direction : which of the phrase (a), (b), (c) and (d) given below should replace the phrase given in bold in the following sentence to make the sentence grammatically meaningful and correct? If the sentence is correct as it is and ‘No correction is required’, mark (e) as the answer.

Q:

His business has been gone downhill ever since his brother left 

• 1
  went downhill
• 2
  go downhill
• 3
  gone downhill
• 4
  going downhill
• 5
  No correction required