Correct the errors in use of conjunctions in these sentences

Dear student,

     Incorrect conjunction     Correct
1.  but                              nor
2.  because                      and
3.  until                             or
4.  and                             but
5.  and                             but also
6.  but                             and
7.  because                     as if
8.  unless                        or
9.  Either, or                     Hardly. when

Regards