III. The word in capitals above each of the
following sentences can be used to form a word that fits suitably in the blank
space. Fill each blank in this way.
It was a very dangerous trip.
People of some professions
should wear … clothing.
If you care about the protection
of the environment, you should buy only … food with no added chemicals.
You have probably already heard
about such a profession as an … .
Scientists have made … and they
Many things that we throw away
can still be … .