III.用正确的介词填空（问题在下面）
问题描述：
III.用正确的介词填空（问题在下面）
3.The Expo will be held in Shanghai _____________1st May,2010
4.We'll trave to England ___________sixteen years.
5.My uncle has lived in Beijing ________sixteen years.
6._________ Christmas,people usually have big family parties.
7.John is planning a trip __________ Hangzhou.
答
3 on
4 in
5 for
6 At
7 for