21.   The boxes can be stored flat.

22.   I think this box is the last.

23.   The box was too heavy for me to lift.

24.   He had arranged for the boxes to be stored until they could be collected.

25.   Boxes are stacked in every nook and cranny at the factory.

26.   The box was too large to fit through the door.

27.   The boxes were identical in shape.

28.   This box is ready for shipment.

29.   Apart from an interesting-looking carved dagger, the box was full of crockery, much of it broken.

30.   Next to the till was a box of chocolate Christmas tree decorations.