Direct and Indirect Speech

DIRECTIONS : In each of the following questions, a sentence has been given in Direct/Indirect Speech.
17. My friend said to me, "Has your father returned from Calcutta?"
  A.  My friend said to me that my father has returned from Calcutta.
  B.  My friend asked me if my father had returned from Calcutta.
  C.  My friend told me that his father had returned from Calcutta.
  D.  My friend enquired me if his father had returned from Calcutta.
18. He said, "I must go next week."
  A.  He said that he must go next week.
  B.  He said that he must go the following week.
  C.  He said that he would have to go the following week.
  D.  He said that he was to go the following week.

19. He said, "Can you sing?" And I said, "No".
  A.  He asked me if I could sing and I said that I couldn’t.
  B.  I denied, when he asked me if I could sing.
  C.  He asked me If I could sing and I said no.
  D.  He asked me that could I sing and I refused.
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20. He asked his teacher, "Need I read this chapter?"
  A.  He asked his teacher whether there was a need to read that chapter.
  B.  He asked his teacher whether he needed to read this chapter.
  C.  He asked his teacher if it was necessary to read this chapter.
  D.  He asked his teacher if he had to read that chapter.
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