Utwórz słowa od tych podanych w nawiasach aby uzupełnić zdania.
1. What do you know about the (invent) of this machine? Who was he? 2. Is there any (connect) between those two points? 3. The high temperature started the (chemistry) reaction. 4. Internet is my main source of (know) . 5. Can you (information) me about the progress of the project? 6. Mr. Smith was a famous (history) , did you know him? 7. He made a (science) discovery in 1984. 8. I came to the (conclude) that it was impossible. 9. (observe) of stars is his main job. 10. What have you done for the (develop) of science?