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1)  i used to live in the country, but now i don't

2)  did you use to wear glasses?

3)  they didn't use to do any homework.

4)  he used to have a motorbike

5)  we used to play in the park when we were little.

6)  she used  to cry  a lot when she was a baby

1.the solar sail will destroy the asteroid.

the solar sail won't destroy the asteroid.

will the solar sail  destroy the asteroid?

2.we'll be able to have holidays in space soon.

we won't  be able to have holidays in space soon.

will we  be able to have holidays in space soon?

3.they're going to send a manned spaceship to mars.

they aren't going to send a manned spaceship to mars.

are they going to send a manned spaceship to mars?

4.mark is going to be an astronomer.

mark isn't going to be an astronomer.

is mark going to be an astronomer?

5.you'll have to wear a spacesuit.

you won't have to wear a spacesuit.

will you have to wear a spacesuit?