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(A)A worker is organizing the shelves.
(B)The shelves are lined up against one side of the wall.
(C)There are books neatly arranged on top of the desk.
(D)The map is being taken down at the moment.

(A)The water is calm today.
(B)Trees are growing along the shore.
(C)Some birds are flying over the sea.
(D)The hillside extends down to the beach.