An underwater hotel has opened in Africa with its rooms＿on the bottom of a three－level flo

问题补充：

An underwater hotel has opened in Africa，with its rooms＿on the bottom of a three－level floating building．

A. to sit

B. sit

C. sitting

D. sat

答案：

A. to sit

B. sit

(答案→)C. sitting

D. sat

解析：

试题分析:句意：在非洲一家水下旅馆开业了，它的窗户处于一栋三层的漂浮建筑的下面。此处考查with复合结构，其中room和sit之间是主谓关系，所以用现在分词，答案选C。

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