Can someone please help me with these 5 questions asap?? Rewrite the sentence to make the pronoun reference clear.

1 - Students like mathematics teachers because they are practical.
2 - Sally told Sarah that she needed to work on her spelling.
3 - The lobby of the old hotel was dimly lit with a crystal chandelier. It was dingy and needed repair.
4 - After Father brought Todd back from the football game, we took pictures of him.
5 - She traced her ancestry back to the original president of the college, which her roommate thought was unfair.