题目内容：

they are having class （改为单数句）

优质解答

She is having class.
或：He is having class.

追问：

he__heaving __ __(给你三个空怎么填

追答：

He ( is) having ( a/ his) ( class)

追问：

his好像不是单数百（他的）复数

追答：

their的单数是: his/ her/its

追问：

their 哪来的

追答：

they are having class （改为单数句） 你的提问不是要用三个空吗： They are having their class. 或： They are having a class. 单说： He is having a class. 或； He is having his class. She is having a class. 或； She is having her class.

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