they take their children from activity to activity 为什么这个句子中a

they take their children from activity to activity 为什么这个句子中a they take their children from activity to activity ,and try 初二英语课文有疑问They take their children from activity to activity, they take their children from activity to activity ,中的语法知识点 英语翻译they take their children from activity to activity,and t they found it _……_（take）their children from activity to prep They take their children to activity to activity and try to from activity to activity.的意思 from activaty to activity中的 activity前为什么不加定冠词? A Speicl Activity On Children's Day activity 英语翻译activity to take action 可以马?