(A) Why have you laughed at them?
(B) Have they been laughed at by you?
(C) You have been laughed at by them
(D) They have been laughed at by you.
(A) Why have you laughed at them?
(B) Have they been laughed at by you?
(C) You have been laughed at by them
(D) They have been laughed at by you.