问题
选择题
This is an unpleasant subject_ ____ we might argue for a long while. [ ]
A. in which
B with them
C. about which
D with it
答案
答案：C
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This is an unpleasant subject_ ____ we might argue for a long while. [ ]
A. in which
B with them
C. about which
D with it
答案：C