1. The smartphone is one of the most useful _____________ devices. (wire) 2. Solar panels take energy from the sun to produce _____________. (electric) 3. Household waste ____________ the environment when not disposed of properly. (pollution) 4. More and more companies are making products from _____________ materials. (recycle) 5. _____________ water bottles reduce plastic waste and contribute to saving the environment. (reuse) 6. The International Robot _____________ is the largest robot trade fair in the world. (exhibit) 7. Robotics helps to make work and your life _____________. (easy) 8. Robots don’t have the _____________ to think about their action before they act. (able)