They are having their Young pioneer's Day.这里的 pioneer's用法对吗

They are having an meeting What class are they having many of your classmates dislike having to stay up late doing thei lessons,(don't they)为什么为什么不是do they? 是having happy they are 还是have happy they are They are interested ____English .,Now they are having ___English class They are having supper.(对having supper提问) when they are having a good they are all having a good time They are having a good time.中文 They are having fun here.[同意句] They are having fun _____in the park They are having a Chinesd lesson . They are all having a good time having.they.lunch.are.连词成句 They are having fun in the zoo they are having meal/a meal/meals? The students are having ___lessons now.(they) what fun they are having ___________(swim) now!what fun they are having ___________(swim) now!