Verified answer

Ответ:

1. These books were sold out very quickly

2. How many cars were damaged?

3. All apples were eaten.

4. The door was opened by a man.

Объяснение:

В пассивах глаголы всегда употребляются в 3-ей форме.

Past Simple Passive употребляется так: was/were + глагол в 3-ей форме.