Unit 1
Being _____ means that you can have many good results.
productive
Fires and rain can ruin animal _____.
habitats
Burning a lot of _____ can pollute the air.
fuel
Students study hard to _____ their skills.
develop
to like better
prefer
Some _____ of traveling are that you meet new people.
benefits
People need to _____ when they move to new places.
adjust
We need to pay a _____ to ride on the train.
fare
It is important to be _____ to your parents and elders.
respectful
feeling at ease
Most parks in the city are open to the _____.
public
If you don't move around, you will _____ exercise.
lack
During the holidays, there are always bad _____ on the streets.
traffic jams
There are many _____ of books to choose from the library.
options
a group of people with similarities
society
Can I _____ late tonight? Tomorrow is Sunday.
stay up
Zoos help _____ animals by helping them have more babies.
endangered
Houses are more _____ than apartments because only one family lives in the building.
private
There are many different types of people in a _____.
society
the condition around something
environment
An _____ can do many things in one day because they have a lot of time
early bird
The _____ of zoo animals and wild animals are very different.
lifestyles
Many people _____ watching movies to reading a book.
prefer
Pirates want to protect their _____ treasures.
precious
not having enough for something
lack