一、单项选择。（20分）
( )1. Jim bought _______English-Chinese dictionary in Beijing last week. It's _______useful tool（工具）for him to learn English.
A. an; an B. the; a C. an; a D. the; an
( )2. _______turn is it to teach _______Japanese?
A. Whose; them B. Whose; their C. Who's; them D. Who's; their
( )3. It's _______for me _______hungry when _______P.E. lessons.
A. difficult; to get; have B. difficult; getting; I have
C. easy; to get; I have D. easy; getting; have
