—What should you do if you have problems with your life?

—          .[ ]

A. To find a friend to talk          

B. Find a friend to talk to

C. Finding a friend to talk to      

D. Found a friend to talk

对敞车装运粮食卸车前发现有被盗痕迹，（）和公安人员应到场共同清点签认，必要时采用凹坑填空法确定短少数量。