my friend Mary sends me a beautiful card on my birthday.
A. Day by day
B. All the year round
C. Day after day
D. Year after year
网友回答
A. Day by day
B. All the year round
C. Day after day
(答案→)D. Year after year
解析：year after/by year意思是:年复一年;一年又一年地,表示每年重复.符合题意.