1. We will use more ____solar_____energy in the future (solar/ sun/ sunny/ sunlight)
2. He looks forward ____ to meeting______her again. (meet/ to meet/ to meeting/meeting)
3. Her father was tired ____of_____ doing gardening. (in/ on/ at/ of)
4. ____Non-renewable_____sources of energy is the source that can’t be replaced after use. (renewable/ Natural/ Effective/ Non-renewable)
5. We should put ___solar panel______ on our roof for the heating and hot water. (solar energy/ equipment/ cracks/ solar panels)
6. Remember ______ to turn off_____the lights before going to bed. (turning on/ to turn on/ turning off/ to turn off)
7. This is……… her……smart vehicle;…… out……..is over there.
8. I think means of transport in the future………won’t use………petrol.
9. At this time next month, we………will be testing……the new flying boat.
10.Biogas is ___plenty__ and cheap for cooking and heating. (plenty/ abundant/ serious/ expensive)