밑줄 친 부분 중 어법상 옳지 않은 것은?
Many studies ① have shown the life-saving value of safety belts. When accidents ② occur, most serious injuries and deaths are ③ caused by people being thrown from their seats. About 40 percent of those killed in bygone accidents ④ would be saved if wearing safety belts.
- ①have shown
- ②occur
- ③caused
- ④would be saved
정답 ④
출처: 인사혁신처 공개 기출(공공데이터포털, 이용허락 제한 없음)