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질문자 | 2017.01.19 | 조회 1097
The police have not yet found out what __________ last night's fire.
(a) was starting (b) had started (c) started (d) was started

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그리고 이 경우에는 답이 무엇이 될까요?
The police have not yet found out what __________ fire.
(a) was starting (b) had started (c) started (d) was started


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