He scarcely (get) outside the door when he (hear ) Wardle's voice talking loudly. I knew...

Question

He scarcely (get) outside the door when he (hear ) Wardle's voice talking loudly. I knew right away that was the place I (look for) all my life.

Answer 1

He had scarcely (got) outside the door when he (heard ) Wardle's voice talking loudly. I knew right away that was the place I (had been looking for) all my life.