Ответ:

1. What has she been reading since ten o’clock?

2. Where have we been driving so long?

3. Den hasn’t been riding his motor-bike since three o’clock.

4. Dolly and Carol have been planting flowers in the greenhouse for about an hour.

5. How long has Brian been learning English?

6. Has Linda been preparing for her test since eight o’clock?

7. Whom have you been talking with for fifty minutes?

8. Where have they been playing tennis since afternoon?

9. The baby has been sleeping for three hours now.

10. We haven’t been climbing this mountain for an hour.

Объяснение:

Ответ:

1) What has she been reading since 10 o'clock?

2) Where have been driving so long?

3) Den hasn't been riding his motor-bike since 3 o'clock

4) Dolly and Carol have been planting flowers in the greenhouse for about an hour

5) How long has Brian been learning English?

6) Linda has been preparing for her test since 8 o'clock

7) Whom have you been talking with for 50 minutes?

8) Where have they been playing tennis since afternoon?

9) The baby has been sleeping for three hoyrs now

10) We haven't been climbing this mountain for an hour

Объяснение: