用恰当的介词填空。 1. —Where is the school? —It's ______ Sixth Avenue. 2. The nearest (最近的) hotel is ______ the bank and the bus station (公交车站). 3. Our school is next ______ the library. 4. The bank is across ______ the police office (警察局). 5. There is a tree ______ front of my house.