A person who investigates crimes.
Detective
Harmful materials that make the environment dirty.
Pollution
"She was reading a book when the phone rang."
Past continuous and past simple
"You will find the place very quickly."
Prediction
What is the capital of the United States?
Washington D.C.
The act of killing someone, usually in a crime.
Murder
The process of turning waste into new materials.
Recycle
"He had already left by the time they arrived."
Past perfect and past simple
"Don't worry! I will fix your computer."
Promise
What is celebrated on July 4th in the U.S.?
Independence Day
A genre of stories about solving crimes or unexplained events.
Mystery
Something that is no longer needed or wanted and is thrown away.
Waste
"While they were painting, the rain started pouring down."
Past continuous and past simple
"I will have the salad for lunch."
Decision
In what state is located the "Walk of Fame"?
California
Something that helps solve a mystery or a problem.
Clue
Rubbish or unwanted materials floating in outer space.
Space Debris
"By the time I finished the project, I had learned a lot."
Past simple and Past Perfect.
"The snow will last two weeks more, it seems."
Prediction
Before the 50 states, how many colonies were there?
13 (Thirteen)
A person who might have committed a crime.
Suspect
A large area where garbage is buried under the ground.
Landfill
"They had been running for hours when they found the cabin."
Past perfect continuous and past simple
"They will visit the museum in the morning tomorrow."
What was the last state to join the USA?
Hawaii