What is the correct form of the verb in the sentence: "He __________ to the party last night?"

The correct answer is "went" because it is the past tense form of the verb "go." In the sentence "He __________ to the party last night," the phrase "last night" indicates that the action has already taken place. Therefore, a past tense verb is necessary to accurately convey the timing of the action.

Using "go" is incorrect here because it is the base form of the verb, applicable in present tense contexts. "Goes" is also incorrect as it refers to the third-person singular present tense, which does not fit the time frame established by "last night." Lastly, "going" is the present participle form and suggests an ongoing action rather than one that has been completed, making it unsuitable for this context. Thus, "went" effectively communicates that he attended the party in the past.