Составить 4 passive voice предложение по структуре:
Adj + noun + preposition + adj + noun + had been + Verb3 / ed + preposition + object + Adj+ noun + preposition + adj + noun + preposition + adj + noun​

Ответ:

1. The mysterious document in the locked drawer had been discovered by the diligent detective.

2. The ancient artifact from the hidden chamber had been carefully examined by the skilled archaeologist.

3. The secret passage through the dark tunnel had been explored by the brave adventurer.

4. The valuable treasure in the guarded vault had been stolen by the cunning thief.

Объяснение: