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