️ Completed the following sentence: Khamis made his international debut at the 2011 World Youth Championships in Athletics. Khamis made his international debut at the 2011 World Youth Championships in Athletics. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk>
2012 Asian Junior Athletics Championships <unk> despite winning his heat in a best of 52.67 seconds <unk> he faltered in the 400 m hurdles final and finished last. <unk> despite winning his heat in a best of 52.67 seconds <unk> he faltered in the 400 m hurdles final and finished last. <unk> despite winning his heat in a best of 52.67 seconds <unk> he faltered in the 400 m hurdles final and finished last. He also competed at the 2012 World Junior Championships in Athletics, running in the heats only.