I know their residence (make it complex)
A I know where they reside.
B I know where did they reside.
C I know where are they residing.
D None of the above
Solution
Correct Answer: Option A
Simple sentence-কে complex করার নিয়মঃ sub + verb + ralative pronoun (who, which, that, where) + sub + verb. f complex form- I know where they reside.