she couldn’t understand was fewer and fewer students showed interest in her lessons.
A. What;why
B. That;what
C. What;because
D. Why;that
网友回答
(答案→)A. What;why
B. That;what
C. What;because
D. Why;that
解析:主语从句she couldn’t understand缺少宾语,要用what引导。表语从句“fewer and fewer students showed interest in her lessons”是一个完整的句子,要用why引导,意思是“为什么越来越少的学生对她的课感兴趣”。