Active to Passive - modals
Transformation exercise
Transform active sentences into passive sentences and the other way round. Use all the words of the original sentence.
Example:
Satellites are used for different purposes. > We use satellites for different purposes.
They have to repair the car before Wednesday.
The government ought to improve the Health Service.
The police must catch the robber.
The supermarket should lower the price of food.
They might build a new library at the university.
The school shouldn't dismiss that teacher.
They have to check the car engine.
We can 't organise a school trip until next month.
The USA and Cuba might sign an agreement next year.