Select the word or phrase that will make the sentence grammatically correct. _______ thought the movie was very good.

"Us" is an object pronoun and cannot function as the subject of a sentence. Using "us" would lead to an ungrammatical construction, as it does not refer to the doer of the action in this context. Therefore, it cannot correctly complete the sentence.

"Them" is also an object pronoun, which indicates a group that is acted upon rather than the doer of the action. Using "them" would imply that someone else is thinking about the movie, thus failing to provide a clear subject for the sentence and leading to grammatical error.

" Ourselves" is a reflexive pronoun used for emphasis or to indicate that the subject and object are the same person or group. It does not serve as a subject pronoun and cannot replace the need for a clear subject in this sentence. Therefore, "ourselves" would not create a grammatically correct sentence.