Pronoun case exercise 2

Grammar review This exercise covers a few tricky spots where subject and object pronouns are easy to mix up.

After "it was/is": use a subject pronoun: "It was I who suggested it," not "It was me."
Right before an -ing verb acting as a noun: use a possessive, the same way you'd say "my car": "My coming home late upset him," not "Me coming home late."
Standing alone, without a noun after it: use mine, yours, his, hers, not my, your: "Her answers are wrong; mine are correct," not "my are correct."