Directions: In the following questions, some parts of the sentences have errors and some have none. Find out which part of a sentence has an error. The number of that part is your answer. If a sentence is free from error, then your answer is (4) i.e. No error

Q:

Someone, they don’t know (1)/ who, knocked at (2)/ their door in midnight.(3)/ No error (4)

• 1
  1
• 2
  2
• 3
  3
• 4
  4