—When    they    ?

—On October 1 last year．

A．do．marry                B．did，get married

C．have，gotten married     D．had，gotten married

--When         they         ?

--On October 1 last year．

A．do；marry                                              B．has；gotten married

C．did；get married                                        D．had；gotten married

--When        they         ?

--They got married on October 1 last year．

A．do；marry               B．has；gotten married

C．did；get married          D．had；gotten married