选择题+补全对话
二、单项选择（15小题，每小题1分，共15分）
从A、B、C、D四个选项中选出一个最佳答案。
( )21．Chinese tennis star Li Na began to play ______tennis at ______ age of six.
A．the; the B．the;／ C．／：a D．／：the
( )22．－Did Helen Keller learn to speak by ______?
－No , Miss Sullivan taught ______
A. herself; herself B. her; herself C. herself; her D．her; her
( ) 23．Sir Run Run Shaw (邵逸夫 ) made a great ______ to the education of the Chinese mainland during his life.
A. progress B. decision C. promise D. contribution
( )24．British people ______ wait in line whatever they do, even though there are only two.
A. always B. seldom C. never D. hardly
