in vacation和at vacation的区别是什么?

in vacation和at vacation的区别是什么? in vacation和on vacation的差别 on vacation 和in vacation和for vacation的区别:-D in sb's vacation 和on sb's vacation的区别 for vacation和on vacationMy parents are in Beijing (for) vacation.为什么用for不用on in vacation,on vacation的区别 应该用in vacation还是on vacation He went to Beijing ____his vacation.A.in B.at C.with D.for He went to the beijing ( )his vacation.A.in B.at C.with D.for Write a report-----your vacation.A on B in C for D at说明为什么， Mary and her family are at vacation in Qingdao.错哪了 Mr.Smith is （选择题）vacation A.at B.on C.in Now,there are many people ( ) vacation.A.in B.on C.at D.with in the vacation ；go on vacation ；on vacation 区别? my brouther is on vacation in Sweden at the moment改为同义句my brouther is taking a vacation in Sweden 【 】 【 】 I didn't go to the mountains( )vacation.I stayed ( )home A:at;in B:on;at C:on;in D:in;at on vacation 和 for vacation的区别 for a vacation和take a vacation