Ответ:

  1. Food will be 3D-printed — g.
  2. Personal drones will be used for travelling — f.
  3. Energy will be taken from space — e.
  4. Weather will be controlled — a.
  5. Contacts with aliens will be made — h.
  6. Extinct animals will be brought to life — d.
  7. Holidays will be spent on other planets — i.
  8. New cities will be built under the water — b.
  9. Time machine will be invented — c.

Ответ: 1 — g, 2 — f, 3 — e, 4 — a, 5 — h, 6 — d, 7 — i, 8 — b, 9 — c.