一. 单项选择 (10分)
从A、B、C三个选项中，选出最佳选项。
( )1. My classmate Peter comes to school ______ bus every day.
A. on B. in
C. by
( )2. Today Mrs White is ______ so she can play with her son.
A. free B. busy
C. afraid
( )3. Mr King can ______ the bag to the airport.
A. give B. buy
C. carry
