q20-fe1fdfd5
0:20
1 ធុងបាស
1 ជំពូក
8 ចម្រៀក
ធុងបាស
ជំពូក
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0:00ជំពូក 1: Number 20. 17s · Speaker 1
Number 20. When does the keynote speaker's presentation start? A. In the main auditorium. B. It's listed in the event program. C. He's a renowned speaker.