I advised her that in the presence of the princess she should not say anything until______.

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问题 I advised her that in the presence of the princess she should not say anything until______.

选项 A、asked
B、being asked
C、having been asked
D、to be asked

答案A

解析 until可以引导省略句,此处省略了she was。until从句的主语必须与主句的主语相同,谓语必须是be动词才可以用省略句,只保留表语。until后面不跟动名词和不定式。
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