The visible part of the completed text is:
Then he learned to water ski and it 5) was fun but a little bit scary. After lunch he rested at 6) home and watched TV. In the evening he walked with his mum. They talked about their day and 7) laughed a lot. Dima loved his holiday at the seaside!
The answers that can be determined from the visible text are: 5 — a) was; 6 — b) home; 7 — c) laughed. Gaps 1–4 are not visible in the photograph, so their answers cannot be determined reliably.