relative or adjective clause

Do you know the boy (a)   is talking to Anita? (who/whom/whose/where/which)

The students (a)   come to class late missed the quiz. (who/whom/whose/which/when)

There is the man (a)   car was stolen. (which/whose/whom/who/where)

The lamp (a)   I bought is beautiful but quite expensive. (which/whose/who/whom/when)

Ms. Laura is the teacher (a)   class I enjoy most. (which/whose/who/whom/why)

The river (a)   flows through the town is polluted. (when/which/who/whom/whose)

I liked the people (a)   sat next to us at the soccer game. (who/whom/whose/where/which)

The people (a)   I invited to dinner at my home were two hours late. (who/whom/which/whose/when)

Marie and Louis still keep in touch with many of the students (a)   they met in their English class five years ago.(who/whom/which/whose/why)

My mother is a person (a)   I admire tremendously. (who/whom/whose/which/when)