It is _____ problem that none of us can work it out. A. so difficult B. such difficult a C. such dif...
2022-09-13 07:21:01 188次 黑龙江省牡丹江市2018-2019学年高一上学期期末考试英语试卷 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is _____ problem that none of us can work it out.
A. so difficult B. such difficult a
C. such difficult D. so difficult a
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