问题
选择题
Yao Ming as well as his teammates ______ hard to win honor for China these years.
A．work
B．are working
C．has been working
D．works
答案
答案：C
根据these years应用完成时态。As well as（="together" with=with），属于复合介词，谓语应和as well as前的主语保持一致。