)You can give the document to _______is in the office.However, _______to require a written paper for it.

A.who;make sure                        B.whom;making sure

C.whomever;be sure                    D.whoever;be sure

You can give the document to       is in the office. However,       to require a written paper for it.

       A．who; make sure                                   B．whom; making sure

       C．whomever; be sure                              D．whoever; be sure