—This dialogue should ________ a question, not a puzzle.

—I am ________.

1. A.
   have started with; to blame
2. B.
   start with; to be blamed
3. C.
   have started from; to blame
4. D.
   start from; to be blamed

－This dialogue should ________ a question, not a puzzle.

－I am ________.

[　　]

A．start with; to be blamed

B．have started with; to blame

C．have started from; to blame

D．start from; to be blamed