Directions : In these questions , a part of the sentence is given in bold . Below are given alternatives to the bold part at (A) , (B) and (C) which may improve the sentence . Choose the correct alternative . In case no improvement is needed you answer is (D ) .

Q:

Mr. Mukherjee knows ten languages , isn't it ? 

• 1
  doesn't Mukherjee
• 2
  No improvement
• 3
  hasn't he
• 4
  doesn't he