是travel to vacation,还是travel on vacation

是travel to vacation,还是travel on vacation Americans like to travel on vacation这篇完形填空 是on vacation还是on a vacation i'm going to to beijiing on vacation this summer.A.travel B. if you travel to another country ,on business or vacation,it — Are you going to travel during this summer vacation? The vacation is coming and I have an urge to travel 是属于英语里面的 On a summer vacation I travel to（ relax ） myself .括号里的形式有错误吗 travel in China,international travel,vacation,hopes and plan 是in vacation,还是on vacation,还是atvacation? 是go on vacation 还是go on a vacation?是go for vacation还是go for 请问是in summer vacation还是on summer vacation?