肯定回
①I'm fine,thanks.
③I'm OK.How about you?
否定回
②I'm ill now.I think I should see a doctor.
③I'm unhappy.Can you play with me?
肯定回
①I'm fine,thanks.
③I'm OK.How about you?
否定回
②I'm ill now.I think I should see a doctor.
③I'm unhappy.Can you play with me?
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