问题
选择题
3.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
答案
答案：B
分析语境逻辑可知，该空表示“过去被标明”，因此应填一般过去时被动语态动词形式were marked。