Our/ volunteer/ in/ communities/ make/ diference.

I usually _ _  jogging around the park every morning.

Put a tag question at the end of the sentence: In big cities, life can become very difficult and unpleasant, _________?

Because of a high birthrate and considered immigration, the United States population in the late nineteenth century increased tremendously from 31 million in 1860 to 76 million in 1900.

“Do you enjoy reading book?” Phong asked Peter.