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一道四级语法题“You are very selfish.It’s high time you ______ that

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一道四级语法题
“You are very selfish.It’s high time you ______ that you are not the most important person in the world,” Edgar said to his boss angrily.
A) realized B) have realized C) realized D) should realize
并说明原因
一道四级语法题“You are very selfish.It’s high time you ______ that
A 或C 你的AC一样啊,不过确实是选过去式,这是固定结构.It's(high) time +that 从句 (一般过去时).是虚拟语气的一种.
再问: 后面跟过去式,不是should+原形,没区别吗?
再答: 虚拟语气有不同的表现形式,有的是过去式、有的是过去完成式、有的是should+原形,具体结构具体记。