听音给下面的句子排序。 ( )(1) The Earth is getting hotter and hotter. ( )(2) Why do people cut down trees? ( )(3) People cut down trees to make more roads and buildings. ( )(4) Farmers need the land to grow food. ( )(5) Trees can help to make the air cool and fresh. ( )(6) We need to plant more trees.
连词成句。 (1) keep , trees, us, can, cool (.) . (2) is, fun, planting, trees (.) . (3)the, should, look, we, young, after , trees(.) (4) good, planting, for, is, trees ,us (.) (5) will, plant, more, I, trees (.)