People/until/flying cars/use/won't/the year 2050.
1.
Do you think/increase/next month/the fuel price/will/?
2.
arrive/next week/won't/The mail/until/.
3.
I don't think/he/the new position/take/will/.
4.
use/solar energy/will/in the future/more/We/.
5.
1. People won't use flying cars until the year 2050.
2. Do you think the fuel price will increase next month?
3. The mail won't arrive until next week.
4. I don't think he will take the new position.
5. We will use more solar energy in the future.