◎ 题干
Mary needs three_________.          

A. papers
B. piece of papers
C. pieces of paper
D. pieces of papers
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“Mary needs three_________.[ ]A. papers B. piece of papers C. pieces of paper D. pieces of papers…”主要考查了你对  【不可数名词】【量词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。