it is very good ___you _____my birthday
A .for ,to jion
B,for,to join in
C .of ,to join
D,of ,to join in
it is very good ___you _____my birthday
A .for ,to jion
B,for,to join in
C .of ,to join
D,of ,to join in
由good排除选项C、D,再由加入某项活动排除选项A,因此最佳答案是B。
C
选B
固定格式,for sb to do sth.