问题
选择题
This is quite a difficult problem and none of us could ____ a solution to it. [ ]
A. come about
B. come out
C. come up to
D. come up with
答案
答案：D
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This is quite a difficult problem and none of us could ____ a solution to it. [ ]
A. come about
B. come out
C. come up to
D. come up with
答案：D