reduce pollution the government has made a policy to restrict the use of plastic bags in

问题补充：

reduce pollution，the government has made a policy to restrict the use of plastic bags in some areas．

A. In order that

B. So as to

C. So that

D. In order to

答案：

A. In order that

B. So as to

C. So that

(答案→)D. In order to

解析：本题的含义是为了减轻污染，政府已经制定政策来限制塑料袋的使用。in order to do表示为了做某事的意思，故本题选D。