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

jusy as we were leaving ,the postman (knocked/was knocking) at the door
英语人气:907 ℃时间:2019-11-11 21:57:06
优质解答
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
我来回答
类似推荐
请使用1024x768 IE6.0或更高版本浏览器浏览本站点,以保证最佳阅读效果。本页提供作业小助手,一起搜作业以及作业好帮手最新版!
版权所有 CopyRight © 2012-2024 作业小助手 All Rights Reserved. 手机版