宁波镇海玫瑰湾会涨价:英语问题

来源:百度文库 编辑:查人人中国名人网 时间:2024/05/10 19:37:27
Three ships ______ by last September.
A. was built B. had been built
C. were built D. were being built
请问应选哪一个?理由是什么?

选D
“ by”表明一直持续到去年九月,三艘船还未建好,处于建设状态下,分词结构可以表示事物的状态