I haven't eaten a chocolate yet. mother hasn't drunk milk yet. Pete hasn't found keys yet. have you already flown to moscow? have they already found the book?
<span>1. b) 2. a) 3. b) 4. a) 5. b) 6. c) 7. a) 8. c) 9. a) 10. a) </span>
<span>11. a) </span>12. c) 13. a) 14. b) 15. c) 16. c) 17. b) 18. b) 19. c) 20. a)
1 species, extinct
2 endanger
3 insects
4 pigeons
5 creature
6 cardboard
7 habitats , habitats
8 include
9 mammal
10 cure
1 by
2by
3with
4by
6 by
7 with
8 by
9 with
10 by
11