A. Asking people to do things (requests) Ta thường dùng 'can' hay 'could' để yêu cầu ai đó làm việc gì: 'Can you wait a moment, please? ' or 'Could you wait a moment, please?' Liz, can you do me a favour? Excuse me, could you tell me how to get to the station? I wonder if you could help me.
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