1 at, in, at, in, at.
2 hall, shelf, bedroom, piano,picture,, sofa, lamp, kitchen,window, carpet, bathroom, chair.
3 any, some, any, any,no,some, an,any,a, some.
4 buy products,buy newspapers, buy books and.
5 at the table, in the box, under the tree, near the door,in the kitchen,on the windowsill.
6 is,are,are,is.