영어 어법문제 Airplanes have many thousands of parts. It, therefore, takes at
Airplanes have many thousands of parts. It, therefore, takes at least four or five years to start, develop, and produce it. 정답이 it을 one으로 고쳐야한다는데 ones 복수로 고쳐야하는거아닌가요? Airplanes 복수아닌가요?
Airplanes have many thousands of parts.
It, therefore, takes at least four or five years to start, develop, and produce one(=an/ one airplane)이 맞습니다.
같은 조건이라면 2대 만드는데는 8/10년, 3대는 12/15년 ~ 이렇게 됩니다.