People c trees yesterday.

People c trees yesterday. Then people began to c down trees and build factories.but no there will be less ___in the future.A,people B,trees C,count People must down the trees Didn't he plant trees yesterday? There.a lot of people in the park yesterday.A.are B.is C.was There ___ many people in the park yesterday.A.was B.were C.t U-----,people will put up Christmas trees. people use the trees _____ christmas people often plant trees in winter People burn（ ）trees（ ） energy hundred people与thousands of trees