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As far as we know, half of Canadian teenagers do not get enough sleep on school nights, _____?
A.do they B.don’t they
C.don’t youD.isn’t it
A
考查反意疑问句。主语为第三人称复数,句子也是否定句,因此反意疑问句用肯定的形式。
句意:就我们所知,有一半的加拿大青少年都没有足够的夜间睡眠,是吗?
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