作业帮 > 综合 > 作业

not until Edward Snowden's letout _____ that the NSA planted

来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:综合作业 时间:2024/07/22 13:49:05
not until Edward Snowden's letout _____ that the NSA planted agents inside "wolrd of Warcraft ",
all oline game
我分不清到底是选 did the world know 还是 had the world know
not until Edward Snowden's letout _____ that the NSA planted
did the world know.
再问: 是选这个,那为什么不用第二个,在他之前知道,怎么区分
再答: 后面没有影响成因,用完成时后面要有一句因果连接的。完成时概念就是过去对现在所造成的影响。