Present simple
Present continuous
Past simple
Past continuous
Present perfect
100

A factory in China makes these toys.

These toys are made by a factory in China.

100

He he writing a book now.

A book is being written now.

100

Microsoft didn't invent computers.

Computers weren't invented by Microsoft.

100

The were rebuilding the cinema.

The cinema was being rebuilt.

100

Somebody has stolen my handbag.

My handbag has been stolen by somebody.

200

People of all ages wear jeans.

Jeans are worn by people of all ages.

200

They are manufacturing a car at the moment.

A car is being manufactured at the moment

200

Picasso didn't paint The Scream.

The Scream wasn't painted by Picasso.

200

He was writing a book when I saw him.

A book was being written when I saw him.

200

He hasn't finished a book yet.

A book hasn't been finished yet.

300

Does a computer control the heating?

Is the heating controled by a computer

300

They hold a trial at the moment.

A trial is being held at the moment.

300

Stieg Larson wrote The Millenium Trilogy.

The Millenium Trilogy was written by Stieg Larson.

300

He was driving a car yesterday at 5 pm.

A car was being driven yesterday at 5 pm.

300

We haven't seen him today.

He hasn't been seen today.

400

People don't use cassette recorders nowadays.

Cassette recorders aren't used by people nowadays.

400

They are using all the resources right now.

All the resources are being used right now.

400

Did the same person direct all the Harry Potter films?

Were all the Harry Potter films directed by the same person?

400

We were painting a picture when he came.

A picture was being painted when he came.

400

Have you already filled out the form?

Has the form already been filled out by you?

500

They use flavor and sugar to make lemonade.

Flavor and sugar are used to make lemonade.

500

Lawyers are ecpecting a trial at the moment.

A trial is being expected at the moment.

500

They discovered gold in California.

Gold was discovered in California.

500

He was watching a movie at nidnight.

A movie was being watched at midnight.

500

Have they give him a book?

Has he been given a book? 

Has a book been given to him?