is she happy? no.she-she is sad.为什么选isn't

is she happy? no.she-she is sad.为什么选isn't

isn't 是 is not的缩写,表示否定的意思
no, she isn't 在这句的意思是:不,她不开心
与下一句的意思正好接上
She is sad.她很难过追答

有问题可以追问

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