1 You have been working in the garden all afternoon.
Have you been working in the garden?
You haven't been working
2 We have been using solar power for ten years
What have we been using?
We haven't been using
3 The children have been playing on the computer for a long time.
Have the children been playing...?
The children haven't been playing
Объяснение:
1 You have been working in the garden all afternoon.
Have you been working in the garden?
You haven't been working
2 We have been using solar power for ten years
What have we been using?
We haven't been using
3 The children have been playing on the computer for a long time.
Have the children been playing...?
The children haven't been playing
Объяснение: