ybm시사 (신) 독해와작문 6과for example, an auto maker in korea ran an online advertising campaign asking visitors to post comments on its advertisement.
if the posts reached a target number, the company would donate a truck to a person who needed one for work but could not afford to buy it.

여기서 if 주어 과거동사, 주어 would 동사원형이지만 해석상 가정법이 아닌가요? 조건절이라면 어떻게 설명가능한가요? woulddonate대신에 donatd도 가능한가요?