Answers:
1. Can’t be
2. Can’t have won
3. Must have been
4. Must be
5. Couldn’t have been
6. May have been
7. Ought to have left
8. Can’t be
9. Could turn out
10. Must have left
11. Should have won
12. Should be
I think the answer is "words that seem opposite or different" because it somewhat indicate a sentence which contains a comparison context clue.
A non-positive quality would be that many blogs try to market something, but they don't always try to present something.
Your answer would be: Bursts of light.
Hope this helps:) God bless!!!
