Question

【题目】—I don’t understand_________.

—I’m sorry. But I was doing my homework at that time.

A. why you didn’t watch the football match

B. why didn’t you watch the football match

C. why you don’t watch the football match.

D. why don't you watch the football match

Answer 1

【答案】A

【解析】

试题分析：句意：－我不明白你为什么没有看足球赛。－对不起。我那时在做作业。understand后跟的是宾语从句，宾语从句要用陈述句语序。因此B、D错了。看足球赛是过去的事，用一般过去时。故选A。