By the time the tornado ended, more than 2,000 people .
A. has injured
B. has been injured
C. had injured
D. had been injured
网友回答
A. has injured
B. has been injured
C. had injured
(答案→)D. had been injured
解析：考察时态语态。By是完成时的标志，by后面跟什么时态，主句就用什么完成时，根据ended可知，主句用过去完成时，injure的用法是sb be injured,因此选择D