Open the brackets and put the verb in past perfect​

1. When I found the key the door had already opened.

2. My lost luggage had found by the time I arrived home.

3. He realized that the truth had concealed from him.

4. He was glad that all his things had already packed.

5. When the war started my grandfather had already born.

6. The work hadn't finished by yesterday.

Объяснение: