| Knott, Gustavo - |
| Bag (31) | | Multiple Choice | 2010.10.28 |
| Black-body radiation (53) | | Multiple Choice | 2020.02.19 |
| Chronicles of Wasted Time by Malcolm Muggeridge (19) | | Multiple Choice | 2021.03.08 |
| Council of Fashion Designers of America (26) | | Multiple Choice | 2009.01.03 |
| Dried persimmon (15) | | Multiple Choice | 2020.01.11 |
| Emily Brontë (59) | | Multiple Choice | 2022.02.08 |
| Facing Mount Kenya by Jomo Kenyatta (18) | | Multiple Choice | 2021.01.12 |
| Fox Mulder (46) | | Multiple Choice | 2012.06.23 |
| Hercules–Corona Borealis Great Wall (41) | | Multiple Choice | 2010.05.26 |
| Hubert Humphrey (100) | | Multiple Choice | 2018.10.28 |
| Lake Michigan (73) | | Multiple Choice | 2019.01.06 |
| List of World Heritage Sites in Egypt (15) | | Multiple Choice | 2016.01.07 |
| Mass killings under communist states (75) | | Multiple Choice | 2017.12.27 |
| Mont-Saint-Michel (90) | | Multiple Choice | 2017.11.10 |
| Onion dome (30) | | Multiple Choice | 2014.12.07 |
| Peter Luger Steak House (56) | | Multiple Choice | 2012.06.15 |
| Pizza in Canada (42) | | Multiple Choice | 2009.06.24 |
| QuesTec (17) | | Multiple Choice | 2016.12.10 |
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