中国大学MOOC: No need to turn off portable heaters off when you leave the room or go to sleep.
举一反三
- No need to turn off portable heaters off when you leave the room or go to sleep. A: 正确 B: 错误
- When you leave the room,you must___. A: turn on the light B: to turn on the light C: turn off the light D: to turn off the light
- 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.
- Don’t forget ______ the light when you leave the office. A: to turn off B: turning off C: turned off D: turn off
- You can turn on the air conditioner before you go home or turn off the light after you leave through the smart phone.