问题补充:
-- I to your birthday party last Sunday!
-- Unfortunately, you were on business.
A. had come
B. came
C. would come
D. would have come
答案:
A. had come
B. came
C. would come
(答案→)D. would have come
解析:考查时态,根据第二句Unfortunately, you were on business可知,第一个人没有参加生日聚会,因此第一空是虚拟语气,意为,我本打算要去参加你的生日聚会的,---不幸的是,你当时在出差。