问题补充：
You to the meeting yesterday. What was the reason for your absence?
A. had come
B. came
C. would have come
D. should have come
答案：
A. had come
B. came
C. would have come
(答案→)D. should have come
解析：试题分析：should have done 本应该做而实际未做。句意：你昨天本应该来参加会议的，你缺席的原因是什么？故选D
