… cause pollution of rivers.

… places can spread germs to food and make us sick.

A … environment is neat and clean.

Cockroaches and rats are … animals.

Cockroaches and rats like to live in dirty and … places.

When cockroaches crawl on food, they leave … on the food.

… lay eggs in standing water.

Mosquitoes can cause … and dengue fever.

An environment with many plants and trees is a … environment.

A dirty and messy environment is ….

Unhealthy environments can make us ….

Everyone must … to keep our community clean and green.

City parks have … for shade from the hot Sun and green grass to play on.

We should take care of our pets by … every day and playing with them.

Harmful insects and other small animals that spread diseases are called ….

We can’t play and relax in dirty and … parks.

The examples of pests are ….

Keeping animals as pets at home can make us ….

We can all help to make our environment greener and healthier by planting more trees and … on the beach.