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