Making a proper choice the future will probably make much difference in our life.A. conce

问题补充：

Making a proper choice the future will probably make much difference in our life.

A. concerning

B. to concern

C. concerned

D. having concerned

答案：

(答案→)A. concerning

B. to concern

C. concerned

D. having concerned

解析：考查介词：concerning关于，concerned关心的，担心的，句意：做出关于未来的适当选择将可能对我们的生活有很大影响。选A。