Obviously hearing their voices, he began knocking on the walls, ordering them to let him out.

He added, instead of waiting until the emergency unit officers were in position with the heavy weapons, the detectives began knocking on the door.

The next day, representatives of the news media began knocking at our door.

She established a Web site and began knocking on doors locally looking for a place to carry her product.

But until Edin began knocking on doors, there weren't many data.

He stopped, turning, as someone began knocking on the door.

Abruptly the atmosphere changed, and the police began knocking people about.

While inside the building, Frank and his friends begin knocking on the doors of the tenants trying to find help.

Members of the 7th Battalion began knocking at the door.

When he gets there he begins knocking on her door.