It is (polite) to speak to the old in such a way. Behave properly please.

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1. (2021九上·无锡开学考) It is (polite) to speak to the old in such a way. Behave properly please.

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1. (2021九上·无锡开学考) It is (polite) to speak to the old in such a way. Behave properly please.