re is less coal and oil, scientists are exploring new ways of making use of _____ energy, such as sunlight, wind, and water for power and fuel.

. Look at the picture. The painter, I think, is the most ______ artist in the country.

Theglassworks_____in1959.

English will help us ______ in our work and study.

I was able at last to ______ my brother to follow my advice