Question

【题目】— I don't understand why you didn't go to the lecture yesterday afternoon.
—I'm so sorry. But I _________ my homework.
A.had done
B.was doing
C.would do
D.am doing

Answer 1

【答案】B
【解析】句意：——我不懂你为什么没参加昨天下午的讲座。——真抱歉，那时我正在做作业。根据时间状语指 yesterday afternoon“昨天下午”“那时”发生的事，故用过去进行时态，选B。