Which word correctly completes the sentence?

Blank house are we going to after the game
A - Who
B - Who's
C - Whom
D - Whose

B - Who's

The correct word to complete the sentence is D - Whose.

The correct sentence would be: Whose house are we going to after the game?

To determine which word correctly completes the sentence, it is necessary to understand the grammatical function required in this context. In the given sentence, the word is being used as the subject of the sentence, indicating that it is needed to specify the person or people who will be going to the house.

Option A: "Who" is the subjective form used for the pronoun. It can be used as the subject of a sentence or clause, and it is appropriate for cases where the pronoun is performing the action of the verb. The sentence "Who house are we going to after the game" would be grammatically incorrect.

Option B: "Who's" is a contraction of "who" and "is" or "who" and "has." In this context, "who's" does not make sense as it implies "who is/has" which does not fit grammatically. So, it is not the correct choice.

Option C: "Whom" is the objective form used for the pronoun. It is used as the object in a sentence or clause when the pronoun is receiving the action. In the sentence, "Whom house are we going to after the game" does not make grammatical sense, so it is not the correct choice.

Option D: "Whose" is the possessive form used for the pronoun. It is used to show ownership or possession. In the sentence, "Whose house are we going to after the game" makes grammatical sense, indicating that the subject is asking about the ownership of the house. Therefore, option D, "Whose," correctly completes the sentence: "Whose house are we going to after the game."