TOEIC・English Undergraduate about 2 yearsago

この問題の答えは(D)be translated なのですが、なぜare translatedにならないのですか？

6. 人 VER To apply for a patent, several countries still require that all documents ------- into their own languages. (A) translate under lets) atiumbe wen pi (B) are translating (C) translated (D) be translated ebian