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

问题描述:

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

under
will finish
have held