1. 。
Her mother knocked on the door.
2. 。
Knock on the door before entering the room.
3. 。
Please do not enter the room without knocking.
4. 。
She knocked on the door.
5. 、。
She had hardly begun to read the book before someone knocked at the door.
6. 。
Hardly had she got in the bath when the postman knocked on the door with a parcel.
7. 。
He was roused by a knocking at the door.
8. 。
He was roused by a loud knocking at the door.
9. 。
He tried knocking at the door.
10. 。
He tried to knock at the door.
11. 、。
He knocked on the door, then came in.
12. 、。
He knocked on the door but nobody answered.
13. 。
He knocked at the door.
14. 。
He knocked at the closed door.
15. 。
Please knock on the door before you enter.
16. べきでし。
You should have knocked before you came in.
17. 。
Someone is knocking loudly at the door.
18. 。
I heard someone knocking.
19. 。
Someone knocked on the door.
20. 。
I heard someone knock on the door.
Lingaku