17. Turning off lights when you leave a room may seem silly, but it is a small step to saving energy.
A: good
B: state-of-the-art
C: ridiculous
D: dark
A: good
B: state-of-the-art
C: ridiculous
D: dark
举一反三
- Who can help you when you leave the room without turning off the lights and heaters A: A Computer. B: A Key. C: A sensor. D: The neighbors.
- Turning off lights when and not wasting electricity will reduce the demand for energy. A: they are not working B: they are not needed C: they are broken D: they are dim
- By turning off lights, the television, and the computer when you are them, you can help a lot.
- . Don’t forget _____________ off the light when you leave the room. A: turning B: turn C: of turning D: to turn
- Don’t forget ______ the light when you leave the office. A: to turn off B: turning off C: turned off D: turn off