问题
选择题
They hardly watch TV on school nights, ________? [ ]
A. will they
B. aren't they
C. do they
D. didn't they
答案
答案：C
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They hardly watch TV on school nights, ________? [ ]
A. will they
B. aren't they
C. do they
D. didn't they
答案：C
，下列关于它的性质说法正确的是( )