They will have planted trees in their garden by 7 o'clock tomorrow в Future in the past будетиметьтакойвид: They would have planted trees in their garden by 7 o'clock tomorrow. Соответственно вопросы будут следующие:
Would they have planted trees in their garden by 7 o'clock tomorrow?
Would they have planted trees or flowers in their garden by 7 o'clock tomorrow?
Who would have planted trees in their garden by 7 o'clock tomorrow?
What would they have planted in their garden by 7 o'clock tomorrow?
Where would they have planted trees by 7 o'clock tomorrow?
When would they have planted trees in their garden?
What would they have done in their garden by 7 o'clock tomorrow?
They would have planted trees in their garden by 7 o'clock tomorrow, wouldn’t they?