The photos shows the answers
Either can be used, depending on whether the actual journalist/reporter is male or female. In general terms, though, the masculine (un) is used.
1. fast
2. hot
3. empty
4. expensive
5. lazy
6. cold
7. happy
8. slim
9. slow
10. dirty
11. poor
12. old
13. heavy
14. clean
15. dry
16. young
17. fat
18. wet
19. light
20. difficult
21. easy
Well, it does seem correct - the tenses are used correctly, the articles agree with the pronouns/nouns in the sentence, so I think it is good.
There is only one thing, but I don't know if that is a typo or what - there should be a period between limpio and <span>él because those are two separate sentences. </span>
Answer: C más que
Explanation: the structure is as you would use in English "more... than"
