问题描述：
求助: I think ___ of the materials I listen to at the beginning of the exam ___ easy.
A. two thirds ... is
B. second three ... are
C. two thirds ... are
D. two third ... are
前面的二、三是什么意思?是什么语法?
答者重谢
A. two thirds ... is
B. second three ... are
C. two thirds ... are
D. two third ... are
前面的二、三是什么意思?是什么语法?
答者重谢
问题解答：
我来补答展开全文阅读