Answer:
1. their
2. they
3. their
4. them
5. their
6. their
7. them
8. their
9. their
10. their
Explanation:
collective nouns refer to a group that is treated as singular items in a sentence example; crew, flock, family audience, etc, as seen in this example. When a collective pronoun refers to a group, consisting of different individuals, it is replaced by a plural pronoun, and also takes a plural verb. For example;
The plumbing crew did their best to repair the broken pipes before the next ice storm.
Here, ''plumbing crew'' (collective noun) is replaced by "their" (plural pronoun.