Replace the underlined words1. One result of playing word puzzle is that it can improve children’s speech.-> The of children’s speech is one result of playing word puzzle.2. Parents should put restrictions on their children’s use of cell phones. -> Parents should their children’s use of cell phones.3. Smoking is harmful to people’s health.-> Smoking does to people’s health.4. Climate change is mainly caused by the release of fumes from motor vehicles.-> Climate change is mainly caused by from motor vehicles.5. Scientists fear that global warming will cause the rise in sea level which could lead to hurricanesand floods.=> The sea level rising will lead to hurricanes and floods.6. The development of science and technology has made great change to people’s life-> has made great change to people’s life.7. Humans are seriously destroying the environment because their demands are gradually increasing.-> Humans are seriously destroying the environment