The exhibition is held twice every year.是被动语态吗?如果没有is ,是什么样的

The exhibition is/was held twice every year?哪个对? -Mr.brown went to Shanghai for the air exhibition last week.-Is that ___ he had two days off?A.what B.when C.why miss the exhibition中译英 This is the second time I （）（see）the exhibition at the museum 动词填空. Walking is great fun.(改为感叹句)______ _______ _______ walking is!Talk loudly in the exhibition hall.(改为否定句)_______ _______ ________ loudly in the exhibition hall. There (is going,is going to be)an exhibition in the museum.选哪个?为什么? the exhibition is not worth visiting...is not为什么不用do not 英语句子成分分析Is this the museum where the exhibition was held?请分析其句子成分 Is this the museum ____ the exhibition was held.that为啥不行 this is the museum that we saw an exhibition the othe day意思 This is the second time that we▁(visit)the industrial exhibition. The exhibition of the newly-designed robot is well worth ___(visit) at the exhibition和in the exhibition有什么区别? 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? 英语听力高手进9.What do we learn about the man?A.He is a tour guide.B.He words in a shop.C.He lives in the city.材料M:Right,where shall we go now?We've seen the church and the modern art exhibition.I don't know what else there is here.W:How The Asia World-Expo is a exhibition and event venue offering over 700000square metres space.exhibition and event venue确切的意思该怎样翻译呢?会议展览中心? He found the watch ( )the exhibition,not( )home.好吧,这问题是有点难,除了in at,还有其他的吗?