问题补充：
The teacher asked Tom .
A. why he was late for school
B. why was he late for school
C. why is he late for school
D. why he is late for school
答案：
(答案→)A. why he was late for school
B. why was he late for school
C. why is he late for school
D. why he is late for school
解析：句意：老师问汤姆为什么上学迟到。在宾语从句中必须使用陈述句语序。主句谓语动词是asked，所以从句也必须是过去时态。故选A。
