Question

4.   (2013 •湛江）一What day is it today?

―It's Monday, and it's my___________ birthday.

A. fifteen                         B. fifteenth

C. the fifteen                       D. the fifteenth

Answer 1

4.  B考査序数词的用法。句意:——今天星期几？——星期一,是我的第十五个生日。表达"第多少个生日"用 . 序数词，定冠词the不与物主代词连用。所以选B。