Cum rezolv acest exercitiu : 
1. He was sitting __________________ in his seat on the train. (comfort) 
2. There was a __________________ light coming from the window. (green)
3. He was acting in a very __________________ way. (child)
5. He's lost his book again. I don't know where he has __________________ it this time. (place)
8. Some of the shanty towns are dreadfully __________________ . (crowd)
9. The team that he supported were able to win the__________________ . (champion)
11. I couldn't find any __________________ in his theory. (weak)
12. He wants to be a __________________ when he grows up. (mathematics)
20. I think that you should __________________ . It may not be the best thing to do. (consider)
13. You need to be a highly trained __________________ to understand this report. (economy)
22. You need a _______________of motivation, organization and revision to learn English.(combine)
25. His __________________ has been expected for the last half an hour. (arrive) 
Trebuie sa completez cu cuvintele din paranteza dar cuvintele sa aiba prefix sau sufix .