Not until the 1850’s______in New York seek to rescue historic building from destruction or alteration.

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问题 Not until the 1850’s______in New York seek to rescue historic building from destruction or alteration.

选项 A、some concerned citizens
B、did some concerned citizens
C、some citizens concerned
D、when some concerned citizens did

答案B

解析 本题考查倒装。当not until位于句首时,句子要倒装。其结构为:Not until+从句/表时间的词+助动词+(主句)主语+谓语+其他。分析句子结构可知,谓语动词是seek to,时间状语是the 1850’s,所以句子时态为一般过去时,倒装时应使用助动词did。因此,答案为[B]项。
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