Ответ:

1.Columbus died without knowing that a new continent had been discovered for him.2.The invitation was not accepted because it was received too late.

3.Only 3 questions were  discussed,when we heard the call.4.This room has always been designed  for the guests.5.They got lost because they weren`t shown the way.6.Milk was always given to him before bedtime.7.She was taken to hospital.8.These films are different from the ones we have been shown so far.

Объяснение:

1.Columb died without knowing that a new continent had been discovered by him.

2. The invitation hadn't been accepted (since)because it was received received too late.

3. Only three questions had been discussed when we heard a bell.

4. This room has always been used for guests.

5. They lost because the way hadn't been shown to them.

6. He had always been given milk before going to bed.

7. She has just been taken to the hospital.

8. These films are different from those we have been shown so far.