The windows are---- the wall and the pictuies are----the wal

in(窗在墙里的） ,on （图画在墙的表面 ）
再问： 按要求改写句子 my cds are in the drawer.否定句 the keys are on the dresser.一般疑问句 Tom's backpack is on the floor. on the floor画线（对划线部分提问）
再答： My cds aren't in the drawer. Are the keys on the dresser ? Where is Tom's backpack ?