新目标八年级上Unit7 Section A(1a-2d)同步练习(1)含答案 二、用所给单词的适当形式填空 11.If we don’t stop ________ (pollute) the water, farmers won’t use the water for their plants. 12.Everyone can make a difference to the environmental ______ (protect) in their daily life. 13.They ______ (plant) some trees to protect the land next month. 14.There are eight______ (planet) around the sun. 15.How bright our ______(future) will be!