Practice speaking English as often as possible and your spoken English will improve.A. flu

问题补充：

Practice speaking English as often as possible and your spoken English will improve.

A. fluently

B. gradually

C. briefly

D. entirely

答案：

A. fluently

(答案→)B. gradually

C. briefly

D. entirely

解析：考查副词。A流利地；B渐渐地；C简洁地；D整体地。句意：尽可能经常练习讲英语，渐渐地你的英语口语将会提高。故B正确。