Составить предложения в Past Perfect, чтобы обязательно были два последовательно идущих

All this had happened before he noticed a sea monster.
After a month had passed, they allowed him to see this popular attraction.
He had watched for several minutes before he noticed a school of whales.
He had walked many miles before he found and decided to stop at a quiet place.
She had been in search of a gift for her husband before she bought it.
He said that he had never been on an island before.
After they arrived they had gone on a guided tour.
He went to the shop and bought a fishing rod as soon as he had got his salary.
She was the only person who had benefited from this incident.
After they had searched for him in the mountains,unfortunately,nobody was found.
He felt terrified when the boat had suddenly rocked from side to side.