[单选题]Not until recently  (     ) the development of tourist-related activities in the rural areas.

A

they had encouraged

B

had they encouraged

C

did they encourage

D

they encouraged

正确答案:C
题目解析

考查时态和倒装。根据时间状语"recently"可知本句应用一般过去时。Not until+状语位于句首,句子采用部分倒装的语序,因此本题选择C。

句意:直到最近,他们才鼓励在农村地区开展与旅游有关的活动。

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