my dear teacher couldn’t understand was fewer and fewer middle school 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：本题考查名词性从句。was前为主语从句，从句动词understand缺少宾语，故用what；was后为表语从句，why在从句中作原因状语。故选A。