Choose the best answer.

 _____ pollution causes breathing problems.

If I were a millionaire, I would travel around the world.

Were ......................................................................................................

An earthquake is a shaking movement of the ground, (5) _____ by the slippage or rupture of a fault within the Earth’s crust.

My mother said “I can’t let you use the phone.” (Prevented)

..............................................................................................................

Choose the word which has a different stress pattern from the others.

My mother said “Don’t forget to tidy your room.”

My mother reminded ................................................................................

I am hungry. I didn’t have breakfast. (Conditional sentences)

Steven Hawking is one of the greatest _____ in 20th century.