It seems that living green is ________easy and affordable. A small step makes a big difference.

To people's great surprise, in Japan Earthquake, a young man ________ the big earthquake under the ruins where he stayed 7 days without anything to eat.

The six­year­old girl infected with the H7N9 bird flu is in a ________ condition after receiving treatment.

The old rules have to be    _____because they only applied to the circumstances that existed when they were made a hundred years ago.

Seeing the big crowd coming towards him, he started to run down the hill，but____   and went down on his hands and knees in the melting snow.

— Why not buy a second-hand car first if you don't have enough money for a new one?
— That's a good        .

(2014·江西六所重点高中3月模拟)He told a joke about death which I thought was in rather poor________considering that Steve’s father had just died.

(2014·河北正定中学月考)Lin Shuhao has earned a good________at home and abroad for his excellent basketball skill and won over thousands of fans.

(2014·江苏省三校4月阶段性考试)To their disappointment，Dr Wang gave a speech about the economy without even a passing________to the problem of unemployment.

—It’s difficult to tell this picture from that one.
—Yes.The differences between the pictures are very________.