这个活动多长时间有一次?用英语怎么说?
问题描述：
这个活动多长时间有一次?用英语怎么说?
答
How often is this event?
How often does this event take place?
答
This activity has a long time
答
How often is this activity
答
how often does the activity take place？
答
How often does this activity/event take place/happen?
How frequently is this activity held?
答
how long does this activicity