I last saw him when I was a student -

I last saw him when I was a student -> I haven't ________________________                                                   I last read '' Was and Peace '' in 2005 . -> I haven't _________________________                                          We last met her in 2009 -> We haven't ______________________                                                                      When did you first know that teacher ? -> How long ________________________                                        When did you start learning English ? -> How long ________________________                                            When did you see that film ? -> How long ________________________                                                             How long have you started that work ? -> When ____________________________                                           When did you get your libary card ? -> How long ________________________