Choose the correct preposition

• up
• across
• out
• out
• on
• of
• to

1. The fireworks display lit [ ] the sky.
2. They came [ ] some ancient relics at the archaeological site.
3. They carried [ ] an experiment in the laboratory.
4. He could not work [ ] the answer to the Maths problem.
5. Jeremy needs to focus more [ ] his studies.
6. Robots will be capable [ ] performing surgery one day.
7. Experiments in science can lead [ ] new discoveries.