sentences: aluminum cans are made of aluminum & aluminum is recyclable ->  aluminum cans are recyclable  aluminum cans are recyclable & recyclable means a material can be recycled / reused many times ->  aluminum cans can be recyled many times  aluminum cans can be recyled many times & an aluminum can is a kind of object & an example of recycling is using an object to make a new object -> using aluminum cans to make a new object is an example of recycling