How can you do that to him?
你怎么能那样对待他呢?
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今天的几个句子是有关表达责备的:1. Are you mad?你疯了吗?2. There now! Didn't I tell you?你看看,我没告诉你吗?3. Who asked you? 谁问你了?4. Can't you be serious for once?你就不能严肃点吗?