Ответ:
456-461-yes,he is.462-463-yes,we are.464-465-yes,he is.466-467-yes,she is.468-yes,they are,yes he is,yes,it is,
471-473-no,they aren't, no,it isn't, no,they aren't, no,it isn't, 477-478-no,they aren't, no,it isn't, no,she isn't, no,the aren't .
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