问题
选择题
________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
答案
答案：A
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。