So interested in the ancient town that they decided to stay there for another few days.A.

问题补充：

So interested in the ancient town that they decided to stay there for another few days.

A. did the visitors get

B. got the visitors

C. did get the visitors

D. the visitors got

答案：

(答案→)A. did the visitors get

B. got the visitors

C. did get the visitors

D. the visitors got

解析：考查倒转句。当so+adj/adv放在句首的时候，谓语部分使用部分倒装的形式。故A正确。