On National Day we have a 7-day holiday.用介词on对吗

we usually watch fireworks displays on national day (watch national day galas) 选择疑问句 What do we usually see on National Day? “what do we usually see on National Day?” 怎么回答? On National Day we have a 7-day holiday.用介词on对吗 We don't know.Where will we go on National Day 两句合一句 是in national day.还是on national day? What do we usually see on National Day?的中文是? 国庆节我们放了七天长假的英语怎么说we _____ _______ seven- day _____ ______ on National Day Our National Day is on __ National Day is on ___ ___. The National Day is coming.We will have seven days ___ a：up b：on c：off d：down National Day is coming.We'll have 7 days____.A.on B.off C.up D.down we went to beijing by plane to watch the grand military parade on national day.保持句意不变 National Day what did you do( )the National Day?the National Day前用on还是at 是 in the national day还是 on the national day?如题 National Day in France is on July fourteenth.特殊疑问句National Day划线 We enjoy our National Day in this month.