They are held every four years.are 是be动词,为什么后面还跟一个动词的过去式呢,就是这点没搞懂!

英语翻译they are both held every four years they are plying every They are held every four years.are 是be动词,为什么后面还跟一个动词的过去式呢,就是这点没搞懂! The olympic games (are)?held every four years. Olympic Games are held every four years翻译 They run for office every two or four years.They run for office every two or four years and elections are held the first week of Nov.这是一篇讲政客的文章.此处的run for 是什么意思? last month l visited the People's Great Hall,in which many important meetings----every year.Awere held Bwas held C are held D will be held The Winter Olympics are held（ ）选every four year 还是every fourth year?理由是什么? The Olympic Games The Olympic Games 是 is held every four years 还是 are held every four years,答案上谓语是are,可我不知道为什么 They are takeing the train every day The Olympic Games ____ held every four years.空格处填is还是are呢? The Olympic Games () held every four years. 用are or is?WHY? The olympic games are held (every four years) 如题 对打()的部分提问.怎样提? ,and both are held every four years on a ___ ____ The Olympic Games () held every four years.用are or is?WHY? They send mike every day.They are _________.打错了应该是They send milk every day.They are _________. the Olympic Games are held A each four year B.every fourth years C every four years Every teacher and every student ____invited to the ceremony to be held tomorrow填什么,为什么?is 或者are中的