10. Choose and copy the best alternatives to complete the text.
[6x1=6]

The weight of school bags has become (a, an, the) topic of debate these days. Children are becoming a target of back problems by the age of fourteen. School bags can easily be replaced (by, to, with) lockers in schools where they can keep their textbooks and reference books. Relieving children from carrying their bulky school bags (is, am, are) a very important thing in today's time. In developed nations, school kids carry nothing (but, and, for) two sheets for homework. All their belongings, including textbooks, are kept in their school lockers. School bags have become a costly affair for parents these days. If children don't have to carry heavy schoolbags, they (will feel, would feel, would have felt) happier going to school, and they don't even need to have their parents (carry, to carry, carried) their bags.