He didn't selfishly keep for himself the money inherited from his uncle. Instead, he made a __________ contribution to help the community.
I’ m sorry, I mistook you ___ your sister ___ mistake.
The scientists are trying to ___ natural energy to decrease air pollution.
China is ___ the east of Asia while Japan is ___ the east of China.
He spoke so slowly that we all could ___ him.
I ___in North China, but now I ___ the weather in South China.