The teacher encourages her students English as much as possible. A. to speakB. speakingC.

问题补充：

The teacher encourages her students English as much as possible. A. to speakB. speakingC. speak

答案：

解析：考查固定用法。句意“老师鼓励学生尽可能多地说英语。”encourage sb. to do sth.，故选A。