Question

Does the following sentence have any personal pronouns? If so, where?: Susan is not sure what she should wear for the graduation party.

Answer 1

"She" is the only personal pronoun in that sentence.

Explanation:

A personal pronoun take the place of a noun for a specific person or thing:
"He" for Tom,
"She" for Susan.
"It" for a thing (a dog, a house, a hamburger, a trip, a question, etc.)
"They" for two or more people or things.

Here's a Personal Pronoun Chart from the website
http://www.learnbritishenglish.co.uk/english-pronouns-visual-chart/