Zmień stronę czynną na bierną podane zdania.

1 Astronomers study the stars and planets.
The stars and planets _______________________________ by astronomers.

2 Fortunately, he restarted the computer with no problem.
Fortunately, the computer ______________________________ with no problem.

3 Students developed new software in their IT classes last week.
New software ______________________________ in the students’ IT classes last week.

4 The company designs robots to helped elderly people with the housework.
Robot ______________________________ to helped elderly people with the housework.

5 They have built two rockets recently.
Two rockets ______________________________ recently.