1)who protects the animals on our planet? - people
1. somebody
2. nothing (но можно и something, здесь не ясно из контекста)
3. Nobody. Something.
4. somebody
5. anybody
6. anybody
7. anything
8. nothing
9. nothing
10. anything, anything
11 nothing
12. something
13. something
14. anything
15. something, nothing
Ответ:
16
1 has broken 2 have spent 3 has eaten 4 haven't painted
17
1 haven't been cooking 2 have you been waiting 3 hasn't been learning 4 have been travelling 5 have they been coming 6 has been talking 7 has been swimming 8 hasn't been working
18
1 is having 2 have 3 don't believe 4 isn't writing 5 are watching