问题补充：
--- Roy and Samantha got married last week. Did you go to their wedding?
--- No, I an important meeting in another city.
A. attended
B. have attended
C. had attended
D. was attending
答案：
A. attended
B. have attended
C. had attended
(答案→)D. was attending
解析：考查时态。根据可知用过去进行时。句意：——上个周Roy和Samantha结婚，你参加他们的婚礼了吗？——没有，我在另外一个城市正在参加一个重要的会议。
