1. Some terrible tantrums are unbearable.
2. Some politicians and business persons are unscrupulous.
3. No students are registered unless they go to the library.
4. All politicians and business persons are unscrupulous.
5. Not all tall buildings are unsafe in earthquakes.
6. Only registered voters may participate in the election.
7. Unless everyone wears black, all funerals will be a farce.
8. It’s not the case that some undetectable particles are really vicious vampires.
9. Students who are vegans get good grades.
10. Students who are vegans get good grades if they study.
11. Both Republicans and Democrats will vote for the peace treaty, unless Trump gets angry.
12. Only grudge-bearing snobs entered the room and sneered.
13. Anyone would appeal unless they were afraid of losing.

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