( ) 1. Andy is American boy and his pen pal is Chinese girl.
A. a; an B. an; an C. an; a D. a; a
( ) 2. I usually go to school bike, but sometimes I go to
school foot.
A. with; on B. on; by C. on; with D. by; on
( ) 3. -- do you go to the library?
--Twice a week.
A. How long B. When C. How D. How often
