This is______ difficult problem that few students can work it out. A. so B. so a C. such a
2022-12-05 16:07:42 58次 2015-2016学年四川巴中巴州区初二下期第一次月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
This is______ difficult problem that few students can work it out.
A. so B. so a C. such a
本题链接：
