方位介词的用法

Theboyis_____thebox.in在……里Lookattheboy.in在……上Thegirlis_____thebox.onThere’sagirl.on在……下Thecatis______thebox.underAwhitecat!under在……后面Thebirdis________thebox.behindHi.I’mabird.behindExercise!Where’stheplant?Where’sthecomputergame?Where’sthebaseball?Onthetable.Underthebed.Inthebackpack.Theend.