— do you study in your English classes?— I usually study by working with a group.A. HowB.

问题补充：

— do you study in your English classes?

— I usually study by working with a group.

A. How

B. What

C. Whom

D. Where

答案：

(答案→)A. How

B. What

C. Whom

D. Where

解析：本题的含义是在你的英语课堂上你如何学习，我通常通过和小组练习来学习英文。回答语用by表示做某事的方式，对此提问通常用how，而what对事物提问，whom对身份提问，而where对地点提问，故本题选A。