Unit 10: Mysteries

Selina traveled to Egypt and saw the ancient pyramids. She showed me all of her pictures. She _____ taken hundreds!

• must have

• should have

• could have

• might not have

Detectives need _____ to solve a crime.

• characters

• evidence

• deductions

• criminals

There was a bright flash of light in the sky. Martin, who belives in aliens, speculates it may have been _____.

• lightning

• a star

• an airplane

• a spaceship from another planet

Television shows that explore _____ of unsolved mysteries are very popular.

• suggestions

• wonders

• civilizations

• theories

The criminal's family couldn't understand _____.

• why he did it

• when he solved the crime

• where it took place

• why the detectives were so serious

It's a _____ that American pilot Amelia Earhart's plane might be found one day.

• fact

• possibility

• suggestion

• deduction

"The door was locked," the man said. "I have no idea how the robbery _____."

• happened

• has happened

• had happened

• might happen

The detectives made some clever _____ and solved the crime.

• proof

• investigations

• deductions

• doubts

In mystery stories, the main character is often a _______.

• deduction

• writer

• detective

• Agatha Christie

There are unsolved mysteries in both the _____ world and modern world.

• ancient

• detective

• crime

• evidence