问题
选择题
— How old is your son? — Five.
—We will have a special party for his birthday .
A．five
B．fifth
C．fifteen
D．fifteenth
答案
答案：B
题目分析：句意：--你的儿子几岁了？--五岁。--我们为他的五岁生日举办一个特殊的聚会。分析上文，提到是五岁，那么下文应该为第五个生日，体现为序数词，fifith第五。故选B