SPORTS
Protective glasses for swimming
Goggles
farm in the city
urban farm
expresses a present ability
can
To do exercise
To work out
the head of a town or a city
mayor
expresses a past ability
could
Field to play football
Football pitch
refers to a place for people to walk
pavement
expresses prohibition
mustn't
Place to play basketball
Basketball court
a wide road for fast travel
motorway
expresses advice
should/shouldn't
Expert swimmer who rescues bathers
Lifeguard
means make something better
improve
expresses lack of necessity
don't/doesn't have to