问题
选择题
It's _______ hard problem for the twins that _______ of them can work it out. [ ]
A. so, neither
B. such a, none
C. so a, neither
D. such a, neither
答案
答案：D
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It's _______ hard problem for the twins that _______ of them can work it out. [ ]
A. so, neither
B. such a, none
C. so a, neither
D. such a, neither
答案：D