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