down
                    - Humans are cutting down the forests to ________ the land for other uses.
 - This blue down coat (羽绒服) looks nice. I want to ________.
 - Four dollars a pair? I think it’s a bit too much.— If you buy three pairs, the price for each will _______ to three fifty.
 - These English words are important, please _____.
 - Here’s a watermelon. Please ____________.
 - If farmers trees and forests, giant pandas nowhere to live.[ ]
 - If farmers trees and forests, giant pandasnowhere to live.
 - My bike _______. May I go ______? —No problem!
 - There are many cars coming up and down. If you insist on standing there, you will risk _________ down on the ground.
 - The bus hit against a tree in the fog and __________to the deep valley, with ten passengers killed and twenty wounded.