Through the reform the economic situation of China much better than it used to.A. turned

问题补充：

Through the reform, the economic situation of China much better than it used to.

A. turned into

B. turned off

C. turned to

D. turned out

答案：

A. turned into

B. turned off

C. turned to

(答案→)D. turned out

解析：turn out证明是。