The doctor ____ is leaving for Africa next month.

The doctor       is leaving for Africa next month.

       A．the nurse is talking to                           B．whom the nurse is talking to him

       C．whom the nurse is talking                    D．the nurse is talking to whom

The doctor ____ is leaving for Africa next month.

The doctor ________ is leaving for Africa next month．

1. A.
   the nurse is talking to him
2. B.
   whom the nurse is talking
3. C.
   the nurse is talking to
4. D.
   who the nurse is talking

The doctor _____________ is leaving for Africa next month.

［　　］