17. Until the 1910 formation of the National Hockey Association in eastern Canada,
professional and amateur teams were allowed to playfully together.
答案是 D 没有异议
我想问的是C 为什么不用were not?
是不是因为not....until 的结构不是必需,就是说until可以与肯定语句搭配用?
谢谢!
举报
were not 应该是对的.
意思一样
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