听力原文：（A) The boxes are piled up to the ceiling. （B) The storehouse is almost empty. （C

听力原文：（A) The gardeners are planting a tree. （B) The firefighters are filling their buc

听力原文：（A) Some building materials are piled up on the ground.（B) A brick wall is being

听力原文：（A) Some boats are docked in the harbor.（B) The boats are transporting cargo.（C)

听力原文：（A) The bags are being unloaded.（B) The bags are hanging on a rack.（C) The bags a

听力原文：（A) They are raising the pipes.（B) They are lying down on the ground.（C) They are

听力原文：（A) The boxes are on a conveyor belt.（B) Workers are taping the boxes.（C) Workers