There is a ball（ ）the chair.填介词.填on是错的.My father 【 】（finish ）his work in an hour.

题目

There is a ball（ ）the chair.填介词.填on是错的.My father 【 】（finish ）his work in an hour.
We 【 】（hold）the 2010 EXPO in shanghai.
还要填这些单词的理由

答案

under
will finish
have held