听力原文：（A) These trees are ready for planting. （B) The truck and trailer are full of log

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

听力原文：There is a bird in the tree． A．B．C．

听力原文：（A) People are watching a concert.（B) People are applauding.（C) A woman is taking

听力原文：Where should I drop off these books？（A) Take them to the front desk.（B) The books

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

听力原文：（A)All of them are sitting around the table.（B)They are making a chart together.（