put great pressure on the local government to tell the truthfulness of the tiger photo as

问题补充：

put great pressure on the local government to tell the truthfulness of the tiger photo as soon as possible.

A. The great loss of lives in the mine

B. The human cases of bird flu

C. The customers’ complaints

D. The questions from people especially experts

答案：

A. The great loss of lives in the mine

B. The human cases of bird flu

C. The customers’ complaints

(答案→)D. The questions from people especially experts

解析：考查句意：后面的意思是;迫使当地政府尽可能快的给出老虎照片的真相，所以选D，符合句意：人们特别是专家的问题，做主语。