Is that your brother?

这个问句有几种回答？

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厄，无外乎就是是或否了，只不过表达的不一样罢了。如Yes it is，或No等等。

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Yes,that is. Of course.

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Yes,that is. Of course.

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四种或者更多

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很多种
要看你语句的长短、

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