1. This is the primary school I went to when I was young.
This is ....................... (WHERE) primary school when I was young.
2. She prefers studying alone to doing group activites.
She prefers ........................ (STUDY) do group activites.
3. The students haven't returned from their trip to the museum yet.
The students ....................... (STILL) back from their trip to the museum.
4. The science test was so difficult that I couldn't understand it.
The science test was ..................... (FOR) to understand.
Liczę na pomoc ;)