Ⅰ.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. Ⅱ.根据句意用所给词的适当形式填空 1.Planting trees is (be) good for the environment. 2.Is it useful for us to protect (protect) the environment? 3.—How can we reduce air pollution? —By riding (ride) bicycles. 4.My mother always drives (drive) me to school every time it rains. 5.As soon as the work is finished (finish) tomorrow,they’ll go for a holiday. Ⅲ.用方框中所给单词的适当形式填空 lock,plant,take,go,cause 1.More trees will be planted on the hills. 2.Loud noise causes hearin
