◎ 题干
---Why do you look so upset?
---There are so many troublesome problems _____.
A.remaining to be settledB.remained settled
C.remaining to settleD.remained to be settled
◎ 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“---Why do you look so upset?---There are so many troublesome problems _____.A.remaining to be settledB.remained settledC.remaining to settleD.remained to be se…”主要考查了你对  【序数词】  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。