问题补充:
Not only Jam but also his parents a few interesting places since they came to China.
A. will visit
B. has visited
C. have visited
D. visited
答案:
A. will visit
B. has visited
(答案→)C. have visited
D. visited
解析:句意:自从他们来到中国以来,詹姆和他的父母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。由Not only……but also连接的两个并列主语,谓语动词与后一个主语保持一致。his parents是复数形式,故谓语动词用复数,选C。