填空题 请结合语境,选词填空. 1. A lot of small problems can be solved by ___________ your computer. 2. Plants ___________ carbon dioxide from the air. 3. Carpooling will reduce your cost and ____________in your trip. 4. Everyone ___________the cause of the traffic accident. 5. ___________the times you dine out, cook more at home, then you'll enjoy a much healthier lifestyle. 6. The Internet opens a whole new world for us. We just have to ___________using it