问题补充：
It seemed that the sea lion didn’t mind with the tourists at all.
A. photograph
B. photographing
C. to photograph
D. being photographed
答案：
A. photograph
B. photographing
C. to photograph
(答案→)D. being photographed
解析：考查动名词用法。固定搭配mind doing sth介意做某事；句意：似乎海狮不介意和游客一起拍照片。根据句意说明使用被动语态的形式，故D正确。
