Neither Sarah nor Alice brought her/their stylebook.

• her
• their

The student that/who won the spelling bee deserves extra credit.

• that
• who

Many researchers attempt to study how the media affects/effects children.

• affects
• effects

The computer that/which has all my thesis files is missing.

• that
• which

Who/whom did you dance with last night?

• Who
• Whom

Shelley said it was she/her who took the picture.

• she
• her

Bradley said it would be alright/all right to call him in the middle of the night.

• alright
• all right

The dog became very protective of it's/its owner.

• it's
• its

The committee announced its/their decision.

• its
• their

The professors made they're/their suggestions to the dean.

• they're
• their