Read the given sentences and choose the verbs that agree with the nouns.
The finished goods _____ reached the stores.

The correct answer is: Have

The correct answer is "Have".
Here, the sense of completing a work very recently is there as the finished goods reached the stores just moments ago. We know that present perfect tense is used in such case and its structure is "Has/Have + v3". Since the noun "goods" is third person plural number, the correct answer is "Have" ("Has" is used for third person singular and for the rest, "have" is used).