中文谷---Whydoyoulooksoupset? ---Therearesomanytroublesom...
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问题详情：
---Why do you look so upset?
---There are so many troublesome problems _____.
A. remaining to be settled B. remained settled
C. remaining to settle D. remained to be settled
【回答】
A
知识点：非谓语动词
题型：选择题
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