33. The decision to cut back on production was not sudden, ___was rather the result of several months of research.라는 문장인데요
여기서 답은 but이더라구요.. 근데 which는 왜 안되죠~?
35. Mr.Saro's computer did not have the program ____ to open the attached file from his client. 에서 왜 required가 답이 되는지 모르겠어요~~~
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