​A.) Should a more accurate calendar than the Gregorian calendar be introduced? Please elaborate on your answer.

The calendar's accuracy could be ranked by the degree to narrow the difference between the orbiting cycle or solar year and the calendar year.

The gap is derived from the fact that the solar year ends by redundancy but the calendar year must end by an integer.  ✔️​

So no other way than arranging by the leap year could not be thought.  

B.) Make these sentences into English 

(03/25/24)

1. 하자품을 교체하기 전에 일단 수리부터 해볼 것입니다.

 We will try just to fix the defective items before replacing them.  ✔️​

2. 교체하는데 드는 비용은 저희가 부담합니다.

We will pay for the cost to replace it.  ✔️​

3. 하자가 계속해서 발견되면 협력업체를 바꿔야 할지도 모르겠네요.

If the defect continues to be found, we might have to replace the sub-conductor. ✔️

​​•  Corrected: The sentences are corrected grammatically.