He went with him and knocked on his daughter's door.

The next day he and his daughter knocked on my door.

He would return home later to be available to any who knocked on his door.

I knocked on his door at eight in the morning.

I thought, what would happen if two people knocked on his door?

They knocked on his door to tell him but he didn't answer.

He went to the house and knocked on the door several times.

I knocked on the door and his wife let me in.

He went to her house and knocked on the green door.

One knocked on the door after all were in bed.

Even if they knocked at my door, I wouldn't tell them a thing.

But to make my mother happy, I knocked at their door.

She moved away, and I knocked again at the door.

He knocked at the door, and the man told him to come in.

They just knocked at the door and said how would you care to take part?

Then he went up the front walk and knocked at the door.

A few minutes later someone knocked at the door again.

A few minutes later we knocked at the door and he let us in.

One of them went ahead and knocked at the door.

When I knocked at the door, he told me to come in.