25. Welcome to the Historical Museum, everyone! This stone knife _______ in South Africa and experts can’t be exactly sure about its use.
A.had been found | B.was found | C.has been found | D.would be found |
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25. Welcome to the Historical Museum, everyone! This stone knife _______ in South Africa and experts can’t be exactly sure about its use.
A.had been found | B.was found | C.has been found | D.would be found |