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Grammar Exercise – Who, Whom, Whose, or Who’s?
Do the exercises below on who, whom, whose, and who’s. Then, click the button to check your answers.
(Before doing the exercises you may want to read the lesson on who, whom, whose, and who’s )
If you need a quick review of the difference between who, whom, whose, and who’s, check our recap section at the end of this post!
Who Vs Whom and Whose Vs Who’s Grammar Exercise with Answers
Exercise Instructions
In this exercise, choose the correct option (Who, Whom, Whose, or Who’s) from the drop-down menu to complete each sentence accurately.
Pay close attention to the role of the word in the sentence—subject, object, possession, or contraction.
Grammar Summary: Who vs. Whom and Whose vs. Who’s
Who vs. Whom
- Who is used as the subject of a sentence or clause, referring to the person performing the action.
Example: Who is calling? - Whom is used as the object of a verb or preposition, referring to the person receiving the action.
Example: Whom should I call?
(Tip: Substitute “he”/“she” for who and “him”/“her” for whom to check.)
Whose vs. Who’s
- Whose is a possessive pronoun used to ask about ownership.
Example: Whose book is this? - Who’s is a contraction of “who is” or “who has.”
Examples: Who’s coming to the party? / Who’s taken my pen?
(Tip: Replace who’s with “who is” or “who has” to confirm.)
Here’s a clear table summarizing the difference:
| Word | Usage | Example | Tip |
|---|---|---|---|
| Who | Subject of a sentence or clause | Who is calling? | Substitute “he”/“she” to check: He is calling. |
| Whom | Object of a verb or preposition | Whom should I call? | Substitute “him”/“her” to check: I should call him. |
| Whose | Possessive pronoun (ownership) | Whose book is this? | Related to possession, like his/her. |
| Who’s | Contraction of “who is” or “who has” | Who’s coming to the party? | Replace with who is or who has: Who is coming? |
