I think someone is in.Let's knock the door.改错

4.Oh,there is someone at the door.Let me have a look.I think 改错1.Is your watch made from gold?2.A knock at the door was i Listen:Someone ______(knock) at the door. WHEN I WAS READING I HEARD SOMEONE -----(KNOCK)AT THE DOOR I heard someone _____(knock /knocking) at the door just now i __(read) a history book when someone __(knock) at the door 单句改错：listen!someone is knocking the door someone is knocking at the door （）i go and see who it is A s can you hear someone _____(knock) on the door now Did you hear someone knock at the door Listen!I hear someone _____the violin in the next door I get annoyed when someone stands in the door.