As there is less and less coal and oil, scientists are exploring new ways of making use of ______ energy, such as sunlight, wind and water for power and fuel.
A.primary B.alternative C.instant D.unique
In my view, London's not as expensive in price as Tokyo but Tokyo is ______in traffic.
A.the most organized B.more organized
C.so organized as D.as organized as
My brother is really ____. He often works in his office far into the night.
A.open-minded B.hard-working C.self-confident D.warm-hearted
As he works in a remote area,he visits his parents only ____.
A.occasionally B.anxiously
C.practically D.urgently
In those days, our _________ concern was to provide people who were stopped by the snow storm with food and health care.
A.normal B.constant
C.permanent D.primary
After the long journey, the three of them went back home, ＿＿＿＿＿＿ .
A.hungry and tiredly B.hungry and tired
C.hungrily and tiredly D.hungrily and tired
