At 1939, television programs were being broadcast in the United States, and the World's Fair of that year featured demonstrations of this advance  in technology.

Helicopters can rise or descend vertically, hover, and move forward, backward, ......................

The Dallas Theater Center presents plays in two buildings ............ was designed by the internationally renowned architect, Frank Lloyd Wright.

............. stem from the everyday life of common people, the most popular themes are love, jealousy, revenge, disaster, and adventure. 

Nathaniel Hawthorne often complained of how few material his life provided for his fiction.

Throughout her length career, Grace Paley has been known for her ability to capture the distinct rhythms of New York speech in her short stories.

Penicillin, probably ...................., came into widespread use after the Second World War.

The United States spends more money on advertising .............. country in the world.

Although Emily Dickinson is now a well-known American poet, only seven of her poems ........ while she was alive.

In 1879, .......... Alice Freeman Palmer become head of the history department at Wellesley College.