Choose the appropriate word for the gap.
1. This is the best kind of wood for outdoor furniture because it is
. It will last years.
is a major problem when we start destroying forests.
3. You can sell products more quickly if you don't tell the truth about them, but it is
4. My computer is riddled with viruses and needs to be
5. Our business is
on the belief that making money and living well shouldn't harm the environment.