--- Did you know ?
--- He was ill in hospital.
A. why he doesn’t e to school
B. why he didn’t e to school
C. why does he e to school
D. why did he e to school
网友回答
A. why he doesn’t e to school
(答案→)B. why he didn’t e to school
C. why does he e to school
D. why did he e to school
解析：英语宾语从句中一般为陈述语序。联系下文，他生病住院了。可知上文描述的是过去发生的动作，故用一般过去时态，选B。