4. Reduce means not buying ____________which are overpackaged. * 1 điểm B. products A. paper D. product C. envelopes 5. I’m ___________ that you are interested in protecting the environment. * 1 điểm A. pleased D. sad C. difficult B. easy 2. Famers use the dung of the animals for ___________ their fields. * 1 điểm B. wasting C. fertilizing A. collecting D. compost 1. People throw __________ billions of cans every year all over the world. A. away * 1 điểm B. from C. up D. into A. away 3. You’ll get back your ______________ when you bring the cans back for recycling. * 1 điểm B. menu D. account A. bill C. deposit