9.Itissuchadifficultproblem_______noonecanworkout.A.asB.thatC.soD.thAT答案怎么是A,应该B把
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题目内容：
9. It is such a difficult problem _______ no one can work out.
A. as B. that C. so D. thAT
答案怎么是A,应该B把
优质解答
如果选B的话
从句应该是no one can work it out.
本句是such...as句型
本题链接：
