Mary wrote an article on the team had failed to win the game .A. why B. what C. who D. tha

问题补充：

Mary wrote an article on the team had failed to win the game .

A. why

B. what

C. who

D. that

答案：

A. why

B. what

C. who

D. that

解析：“the team had failed to win the game”是词on的宾语从句，从句中不缺主干，故排除B和C.再根据句意 “为什么这个队没能赢”