Спросите столько вопросов сколько вы сможете по этому предложению : they have brought twenty chairs in the hall.

Have they brought twenty chairs in the hall?
Have they brought twenty or fifteen chairs in the hall?
Who has brought twenty chairs in the hall?
What have they done?
What have they brought in the hall?
How many chairs have they brought in the hall?
Where have they brought twenty chairs?
They have brought twenty chairs in the hall, haven't they?

но я б сказала - to the hall везде.