require (v)
allow (v)
I am _________; I have everything I want and/or need in life.
satisfied (adj)
Many cars today waste a lot of fuel, but the next ___________________ of cars will use less fuel.
generation (n)
A substance such as coal, gas, or oil that can be burned to produce heat or energy.
fuel (n)
Using more of something than is needed
wasteful (adj)
I lost my pen; do you have a(n) ___________________ I can borrow?
extra (adj)
The bus driver told the ___________________ to sit down while bus was moving.
passengers (n)
To become twice as large, or twice as much.
double (v)
People who buy things from a store or company.
customer (n)
Exercising can ___________________ your health; it helps you lose weight and live longer.
benefit (v)
Carbon dioxide is a gas that is ___________________ carbon and oxygen.
made up of (phr v)
The act of bringing something (e.g. a letter or package) to a particular place or person.
delivery (n)
The land, water, and air in which people, animals, and plants live.
environment (n)
She made a cake in the ___________________ of the Batman symbol for her son's birthday party.
shape (n)
My flight was late, and my luggage was lost. I'm going to ___________________ to the airline company.
complain (v)
To ask for a particular amount or money for a service or something you are selling.
charge (v)
Things such as wood, plastic, paper, etc that are used for making or doing something.
materials (n)
The ___________________ seats in the airplane cost $800. If you want a first-class seats, you will have to pay $1,200 extra.
regular (adj)
I usually pack only one small bag when I travel. I don't like to carry a lot of ___________________.
luggage (n)