Mr. Tripp's delayed visit to the company's office in Cologne last month _____ due to a scheduling error made by his assistant.
(a)was (b)been (c)being (d)are
이 문제에서 아예 답을 선택 못하겠더라구요 ㅠ
왜 was가 들어가는지 이유좀 알려주세요!
Mr. Tripp's delayed visit to the company's office in Cologne last month _____ due to a scheduling error made by his assistant.
(a)was (b)been (c)being (d)are
이 문제에서 아예 답을 선택 못하겠더라구요 ㅠ
왜 was가 들어가는지 이유좀 알려주세요!


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