Not only Jim but also his parents a few places of interest since they came to China.A. ha

问题补充：

Not only Jim but also his parents a few places of interest since they came to China.

A. has visited

B. will visit

C. have visited

D. visited

答案：

A. has visited

B. will visit

(答案→)C. have visited

D. visited

解析：句意：自从他们来到中国后，不仅吉姆，而且还有他的父母已经参观了几个有趣的地方。结合语境可知本句描述的是现在已经完成的动作，故用现在完成时态。句子谓语与最近的主语his parents保持一致。故选C。