I think it is for them to find the lost bag with the help of the police.A. properB. direct

问题补充：

I think it is for them to find the lost bag with the help of the police.

A. proper

B. direct

C. excellent

D. possible

答案：

A. proper

B. direct

C. excellent

(答案→)D. possible

解析：此题考查固定句型结构it is+形容词+for sb to do sth表示对某人来说做某事怎样，根据语境可知选择possible表示可能。