Exercício: Utilizar os pronomes corretamente em inglês

I would like to know which one is correct and why, thanks.

Our teacher gave the extra credit to Melaine and (I/me)

No one saw him and (she/her) together at the game.

Carl loves Carol, and he dreamed about (she/her) all night long.

No one took (she/her) and (I/me) seriously when we told the story.

(Who/whom) is Dave inviting to the dance?

The director gave Jill and (I/me) the scholarship.

Everybody wants (they/them) to win the championship.