read the sentence. the forgery ________ so exquisite that it hung in the museum for the past two decades…

read the sentence. the forgery ________ so exquisite that it hung in the museum for the past two decades without discovery. which verb or verb phrase is in the correct tense to complete the sentence? should be is being was will be
Answer
Brief Explanations:
The action happened in the past (for the past two decades) and is now over. The simple - past tense "was" is appropriate. "Should be" indicates obligation, "is being" is present continuous, and "will be" is future tense, none of which fit the context.
Answer:
was