IN:
Multi-choice problem: [he]

Student A beat student B, because he slacked off.

OUT:
student B


IN:
Multi-choice problem: [it]

The kitten played with the yarn because it was bored.

OUT:
The kitten


IN:
Multi-choice problem: [she]

Mary cleaned Susan's room and she was thankful.

OUT:
Susan


IN:
Multi-choice problem: [they]

Chelsea hate Manchester United because they are too cocky.

OUT:

Manchester United