作业帮Listen!I hear someone knocking at the door.Listen!_____ ______ a knock on the door.
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 04:38:10
Listen!I hear someone knocking at the door.Listen!_____ ______ a knock on the door.
Listen!I hear someone knocking at the door.
Listen!_____ ______ a knock on the door.
Listen!I hear someone knocking at the door.Listen!_____ ______ a knock on the door.
Listen!_There is _ a knock on the door.