엑스포를

In a sentence

• 나는 엑스포를 방문할 계획입니다.

  I plan to visit the expo.

  Here, '엑스포를' is the object of the verb '방문할' (to visit), using the object marker '를' to indicate the expo being the target of the action.

• 엑스포를 준비하는 과정이 매우 바쁩니다.

  The process of preparing for the expo is very busy.

  In this sentence, '엑스포를' is part of the phrase describing the preparation related to the expo, again marked by '를' as the object of the action '준비하는' (preparing).

• 그녀는 엑스포를 성공적으로 개최했습니다.

  She successfully hosted the expo.

  Here, '엑스포를' indicates the expo as the object of the verb '개최했습니다' (hosted), used with '를' emphasizing the direct object.