BE HELD EVERY 4 YEARS be held once for four years每四年举办一次以上说法哪个更准确

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 exhibition is/was held twice every year?哪个对? The exhibition held twice every year.这句话对吗 The Winter Olympics are held（ ）选every four year 还是every fourth year?理由是什么? BE HELD EVERY 4 YEARS be held once for four years每四年举办一次以上说法哪个更准确 Whether Olympics should be held every four years? Trailwalker is held in November every year(同义句）Trailwalker _____ _____ in November every year. The Art Festival ______ in our town every year.A.holds B.is held C.is holding D.was held The exhibition held twice every year.需要加is?不加的话 是不是用hold The exhibition is/was held twice every year?这句话对吗? The match is held every year.It is large and important. the Olympic Games are held A each four year B.every fourth years C every four years The winter Olympic games are held every four yearsevery four years可以换成every fourth year吗 英语An important meeting in Shanghai next year A.hold.B.held.C.will hold.D.will be held the coming 30 th olympic games will be held in ___this year. The Shanghai Book Fair will be held again next year.反义疑问句RT. The Tourism Year to be separately held in Russia in2012 and in China in 2013 The exhibition is held twice every year.是被动语态吗?如果没有is ,是什么样的