( ) the system detect any breach in security, it will automatically close and lock all outside doors.
1. would2. had3. if4. should
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2022-05-28 21:45:40
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( ) the system detect any breach in security, it will automatically close and lock all outside doors.
1. would2. had3. if4. should
왜 답이 4번인지좀 알려주세요
희박한미래가정할때
if ~ should 동.원에서 if가 생략되면
도치가능합니다