Wind was used to move sailing ships across the oceans and to __________ machines like windmills.
break
drive
power
fix
Now we use it to __________ electricity.
generate
sell
share
protect
It does not produce __________ gases or harm the environment.
deep
strong
harmful
colorful
Wind is a __________ resource—it never runs out.
hidden
regular
renewable
dangerous
Turbines must be placed in locations where wind is strong and __________.
steady
noisy
cold
sunny
It’s difficult to __________ the electricity to where it is needed.
remove
deliver
protect
discover
Some people say turbines spoil the __________ of natural places.
weather
beauty
safety
history
Scientists are working hard to __________ turbines more efficient.
push
turn
make
show
Wind energy may not __________ all of our problems.
solve
explain
break
fix
In the future, it might help us __________ a healthier planet.
save
control
test
build
