who'll       
uk/huːl/ us/huːl/
 (who will 的缩略形式)
short form of who will
  Who'll be at the party tomorrow? 明天都有谁去参加聚会? 
 - More examples
 - Who'll help me with the washing up?
 - Who'll be the next president?
 - The's a woman who'll always help others.
 - I don't know who'll take over when I retire.
 - These are the people who'll being doing the course next term.