-How does she study an English test?-She studies by the textbook.A. for reading B. by re

问题补充：

-How does she study an English test?

-She studies by the textbook.

A. for ,reading B. by ,reads C. for ,read

答案：

解析：根据语境可知此句的含义是她怎样为英语测试做准备的?她通过读教科书来学习的。其中涉及到固定短语study for sth表示为…而学习或做准备；by doing sth表示通过什么方式做某事。其中介词by的后面要跟动词的ing 形式。故选A。