一. 单项选择（15分）
( )1. My sister’s birthday is ___ June 12.
A. on B. at C. in D. of
( )2. My birthday is ___ March.
A. on B. at C. in D. of
( )3. The boy is only ___. Today is his ___ birthday.
A. five; five B. fifth; five C. fifth; five D. five; fifth
( )4. ---____ is the Olympic Ga mes (奥运会)in Beijing？
---____ 2008.
A. How old; In B. When; In C. What; In D. When; On
