When the Greeks had _____ the Persians, a soldier ran from Marathon to Athens.
.It is no use ______ after you know your failure.
. He was in hospital for six months. He felt as if he was ___from the outside world.
His suggestion is worth_____.
It is re ported that the United States uses ___ energy as the whole of Europe.
-Mr Wang is a man of few words, but quick in mind. -__________, you know.