She said she was so unlucky as_____train and spend another day.A,missing B,having missed C,missed D,to have missed 我选得B,正确答案是D,就这样的题我总也搞不明白,看语法书也不管用,

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She said she was so unlucky as_____train and spend another day.A,missing B,having missed C,missed D,to have missed 我选得B,正确答案是D,就这样的题我总也搞不明白,看语法书也不管用,
She said she was so unlucky as_____train and spend another day.
A,missing B,having missed C,missed D,to have missed
我选得B,正确答案是D,就这样的题我总也搞不明白,看语法书也不管用,

She said she was so unlucky as_____train and spend another day.A,missing B,having missed C,missed D,to have missed 我选得B,正确答案是D,就这样的题我总也搞不明白,看语法书也不管用,
如果你对as to这个短语的用法不陌生的话,答案即可跃然纸上.
as to位于句中,前面出现表达某种心理活动的动词,形容词(如题干中的unlucky),表示“在……的问题上”、“就……问题来讲”,所引出的问题都有很强的针对性.