I often laugh when I see my grandma learning pop songs .But she says,“ One is never ___old to learn.”

When it _____ renewable energy, what occur to me are solar energy and wind energy.

elves from the physical and mental tensions, we each need deep thought and inner quietness.

Have you _____ your things, Bob? — The train is leaving at 2:30 this afternoon, so we don’t have too much time.

I like __________in the early morning when the air is fresh and I can take a walk around the garden.