More highways have been built in China it much easier for people to travel from one pla

问题补充：

More highways have been built in China, it much easier for people to travel from one place to another.

A. having made

B. made

C. to make

D. making

答案：

A. having made

B. made

C. to make

(答案→)D. making

解析：考查非谓语动词。句意：中国已经修建了许多高速公路，使得人们的旅行更加容易了。Highways与make是主谓关系，应该用现在分词表伴随状况。A项表示动作有先后，这里是同时发生。故选D。