Due to studio rules and regulations recording devices ______ not allowed on the premises.
(A) are 이 정답인데요
(D) have been 은 정답으로 쓸 수 없나요?
Due to studio rules and regulations recording devices ______ not allowed on the premises.
(A) are 이 정답인데요
(D) have been 은 정답으로 쓸 수 없나요?


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