问题补充:
Mr. White as well as his friends a number of countries in the past few years.
A. has travelled
B. have travelled
C. had travelled
D. travelled
答案:
(答案→)A. has travelled
B. have travelled
C. had travelled
D. travelled
解析:考查主谓一致及时态。as well as连接两个主语,谓语动词与前一个主语保持一致,故用单数,根据时间状语in the past few years,故用现在完成时,故选A。