The correct answer choice for the sentence given is; Choice A; hadn't gone / were.
<h3>What is the best way to complete the sentence?</h3>
According to the task content, it follows that the subject of the sentence is plural.
Additionally, the sentence tense is past and on this note, the correct answer choice is Choice A.
Read more on tenses;
brainly.com/question/13956220
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