18、 18
(A) their bellies are dragged
(B) with their dragging bellies
(C) dragging their bellies
(D) with their bellies dragging
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統計: A(0), B(1), C(15), D(22), E(0) #1293303
統計: A(0), B(1), C(15), D(22), E(0) #1293303