jusy as we were leaving ,the postman (knocked/was knocking) at the door

分类: 作业答案 • 2021-12-19 16:19:42

问题描述：

答

knocked

答

填knocked

答

knocked
knocked （敲门）是瞬间动词,在英语中,瞬间动词用一般过去时.持续动词用过去进行时

答

我们正要离开时，邮递员敲门了。（knocked)