you've made the same mistakr again.How__ you be so careless!A. may B. can为何选A
问题描述：
you've made the same mistakr again.How__ you be so careless!A. may B. can为何选A
答
B （你确信吗?）
与 how 一起用于疑问句,表示感受强烈)能,能够
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