Good luck!
small
smaller - the smallest
The actor (arrive) late yesterday.
The actor arrived late yesterday.
bought-bought
Ambulance helps people in dangerous situations.
Correct
happy
happier - the happiest
The nurses (go) to the hospital.
The nurses went to the hospital.
come
came-come
Women usually have a moustache.
Wrong
expensive
more expensive - the most expensive
Vets (not catch) that big dog.
Vets didn't catch that big dog.
drive
drove-driven
Police officers chase the criminals.
Correct
good
better - the best
The thief (run away) very quickly.
The thief ran away very quickly.
hear
heard-heard
Astronauts don't go to space.
Wrong
bad
worse - the worst
How the police officer (climb) the wall?
How did the police officer climb the wall?
teach
taught-taught
Fish usually have scales.
Correct