Present simple
Past simple
Will
Present perfect
Difficult :)
100

Someone cleans the windows every Monday.

The windows are cleaned every Monday. 

100

They built this bridge in 1602. 

This bridge was built in 1602.

100

They will open the new cinema next week. 

The new cinema will be opened next week. 

100

Thieves have stolen his car. 

His car has been stolen. 

100

I think scientists will find a cure for AIDS soon.

I think a cure for AIDS will be found soon. 

200

Smoking kills millions of people every year. 

Millions of people are killed by smoking every year.

200

Someone made these shoes in Italy. 

These shoes were made in Italy.

200

The president will give a speech tonight. 

A speech will be given by the president tonight. 

200

They have executed the murderer. 

The murderer has been executed. 

200

The company gave us a pay rise. 

We were given a pay rise. 

300

Factories dump millions of liters of wastewater into rivers and oceans every day. 

Millions of liters of wastewater are dumped into rivers and oceans every day. 

300

People didn't use credit cards so much 30 years ago.

Credit cards weren't used so much 30 years ago. 

300

We will have to do something about that. 

Something will have to be done about that. 

300

They have already fired 300 people this year. 

300 people have already been fired this year. 

300

My boss told me not to come in tomorrow.

I was told not to come tomorrow.