Both cities very beautiful attracting people from all over the country.A has B have C a

问题补充：

Both cities very beautiful, attracting people from all over the country.

A has B have C are D is

答案：

解析：句意：这两个城市是非常漂亮的，吸引了来自全国各地的人们。因为空格后是形容词，所以应该用系动词，主语是名词的复数，故选C。