There are many people who have a          like yours, but they don’t believe they have the power to do anything to improve our environment.

The invention of the typewriter was a great_______  to communication and printing.

_______ refers to books and stories about imaginary people and events, rather than books about real people and events.

Seeing the happy ______ of boys playing on the playground, I can’t help thinking of my childhood.

In our class, when the bell rang and the teacher closed his book, it was a      for everyone to stand up.