She is having class.
或：He is having class.he__heaving ____(给你三个空怎么填He ( is) having ( a/ his) ( class)his好像不是单数百（他的）复数their的单数是: his/ her/itstheir哪来的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.