Our English teacher always encourages us ________ as much English as possible in English class.
A.speakingB.to speakingC.to speakD.to be speaking在线课程C
题意为：我们的英语老师总是鼓励我们在英语课上尽可能多讲英语。encourage sb. to do sth.为固定搭配，意为“鼓励某人做某事”，或encourage sb. in sth.应牢记这些搭配。故C项正确。