题目内容
11.It is a good habit to brush your teeth at leasttwicea day.(two)分析 句意:一天至少刷两次牙是好习惯.
解答 答案:twice.从句意知道此处所给词表示频率,与two对应的表频率的词是twice,故填:twice.题目分类:序数词.
点评 解答此题关键是要看到此处的two形式是表示的频率.
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