Saving electricity helps _______________ the air _______________.
How can we save energy？
1.______________ _____________ _____________ ____________ when no one is watching it.
子主题
2.Put on _____________ _____________when it is cold, instead of turning up the _____________.
3._____________ ______________ ______________ when no one is in a room.
Hot Water from the Sun
Some homes use the heat from the sun to make hot water. Using the heat from the sun to make hot water _____________ _____________ ____________ ___________ _____________.
Electricity from the Sun
Some homes use _____________ ____________to make ________________from the sun's light. This helps _______________ ________________.
The ___________is used to ____________ ______________inside the home.
