Have you decided where you will go for a holiday为什么用will?

Have you decided where you will go for a holiday为什么用will? Have you decided where you can go for your holiday?句型转换 Have you decided _____ you will go to Beijing on holiday or Go where you will will you go to hainan island for your winter holiday?为什么用by Have you decided where to go for your vac Have you decided where to go for your holidays? -Have you decided where to go for your vacation? -Where will you go ______during the winter holiday?-Hainan I Where will you go during this summer holiday? Where will you go for the holidays?为什么要用for呢?to不行吗? where will you go sightseeing