________ energy is generated from natural resources—such as sunlight, wind, rain, tides and so on.

fter the mud-rock flow hit Zhouqu, GansuProvince, many soldiers came to the ______ as many people were trappedunderground.

The people who are more confident have more________ to make themselves successful.

The kind girl ________all her spare time she had ____ others.

My old neighbour Charles felt__________ after hischildren moved out．