Unit 8A green world,.根据首字母及汉语提示补全单词 1.Can you be serious( 严肃的 ) for once?This is important for everyone. 2.Giving up smoking can reduce( 降低 ) the risk of some diseases. 3.Our teacher says we can recycle( 回收利用 ) waste to protect our environment. 4.It is wise( 明智的 ) of you not to argue with him. 5.The soldiers dug( 挖掘 ) lots of people out of the bricks and stones after the earthquake. .根据句意用所给词的适当形式填空 1.Planting treesis( be ) good for the environment. 2.Is it useful for usto protect( protect ) the
