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100

People speak English here. 

English is spoken here (by people)

100

We didn't use to throw away garbage

Garbage didn't use to be thrown away. (by us) 

100

Sami people used to herd reindeer.

Reindeer were heard by Sami people.

100

The Chinese invented gunpowder. 

Gunpowder was invented by the Chinese. 

200

They cut down thousands of trees every day 

Thousands of trees are cut down every day. 

200

The police arrested five thieves yesterday. 

Five thieves were arrested yesterday. 

200

Sussy figured out the Math problem.

The Math problem was figured out by Sussy.

200

The Nunavut people used to use wood for heating.

Wood used to be used for heating by the Nunavut people.

300

Bees sting humans in the Summer. 

Humans are stung by bees in the Summer. 

300

The teacher handed out the tests

The tests were handed out (by the teacher)

300

Fishermen killed a great white shark last week. 

A great white shark was killed last week by fishermen. 

300

Albert used cutting-edge technology to find the treasure.

Cutting-edge technology was used to find the treasure.

400

Smoking kills millions of people every year. 

Millions of people are killed by smoking every year.  

400

The doctor told my father to stop smoking. 

My father was told to stop smoking by the doctor. 

400

They used to play ball games in El Tajin

Ball games were played in El Tajin.

400

People didn't use credit cards much 30 years ago 

Credit cards weren't used much 30 years ago. 

500

Factories dump tons of waste in the sea. 

Tons of waste are dumped into the sea. 

500

The police gave her the bad news yesterday. 

The bad news was given to her yesterday. 

500

People used to find information at the library 

Information used to be found at libraries (by people)

500

Pollution will destroy our planet.

Our planet will be destroyed by pollution.