Put the verbs in brackets into the to-infinitive or the –ing form.
1. they have managed (gather) all their supplies in one week.
2. the trip is expected ) for two or three years.
3. tanya has spent a lot of time ) about the solar system.
4. their spaceship must avoid (hit) asteroids and ufos.
5. their parents asked them if they had forgotten (buy) enough dried food and e-books to take with them.
6. phillip promises (help tanya pilot their rocket ship.
7. we like ) new planets and ) new things.
8. although their parents would prefer them (remain on earth, they can see that it is no use ) to get them to change their minds.
9. it’s too late now. there’s no point in (argue) with them.