As the years passed, many occasions—birthdays, awards, graduations— with Dad’s flowers.
A. are marked
B. were marked
C. have marked
D. had marked
网友回答
A. are marked
(答案→)B. were marked
C. have marked
D. had marked
解析：主语是many occasions，所以谓语动词要用复数式，be marked with是固定搭配，“。。。有什么印记”，用法如同be filled with\be lined with\be crowded with等一样，又如：His face is marked with grief. 他脸上有忧伤的痕迹。